diff --git a/clients/client-s3/src/commands/CreateBucketMetadataTableConfigurationCommand.ts b/clients/client-s3/src/commands/CreateBucketMetadataTableConfigurationCommand.ts
index 1993ff7a0250..36e9a482f426 100644
--- a/clients/client-s3/src/commands/CreateBucketMetadataTableConfigurationCommand.ts
+++ b/clients/client-s3/src/commands/CreateBucketMetadataTableConfigurationCommand.ts
@@ -143,8 +143,7 @@ export class CreateBucketMetadataTableConfigurationCommand extends $Command
       getSerdePlugin(config, this.serialize, this.deserialize),
       getEndpointPlugin(config, Command.getEndpointParameterInstructions()),
       getFlexibleChecksumsPlugin(config, {
-        requestAlgorithmMember: "ChecksumAlgorithm",
-        requestAlgorithmMemberHttpHeader: "x-amz-sdk-checksum-algorithm",
+        requestAlgorithmMember: { httpHeader: "x-amz-sdk-checksum-algorithm", name: "ChecksumAlgorithm" },
         requestChecksumRequired: true,
       }),
     ];
diff --git a/clients/client-s3/src/commands/DeleteObjectsCommand.ts b/clients/client-s3/src/commands/DeleteObjectsCommand.ts
index 5f7a9c1c9492..79599b095fd2 100644
--- a/clients/client-s3/src/commands/DeleteObjectsCommand.ts
+++ b/clients/client-s3/src/commands/DeleteObjectsCommand.ts
@@ -322,8 +322,7 @@ export class DeleteObjectsCommand extends $Command
       getSerdePlugin(config, this.serialize, this.deserialize),
       getEndpointPlugin(config, Command.getEndpointParameterInstructions()),
       getFlexibleChecksumsPlugin(config, {
-        requestAlgorithmMember: "ChecksumAlgorithm",
-        requestAlgorithmMemberHttpHeader: "x-amz-sdk-checksum-algorithm",
+        requestAlgorithmMember: { httpHeader: "x-amz-sdk-checksum-algorithm", name: "ChecksumAlgorithm" },
         requestChecksumRequired: true,
       }),
       getThrow200ExceptionsPlugin(config),
diff --git a/clients/client-s3/src/commands/PutBucketAccelerateConfigurationCommand.ts b/clients/client-s3/src/commands/PutBucketAccelerateConfigurationCommand.ts
index 14e4f31b4e7e..491ef5b11b54 100644
--- a/clients/client-s3/src/commands/PutBucketAccelerateConfigurationCommand.ts
+++ b/clients/client-s3/src/commands/PutBucketAccelerateConfigurationCommand.ts
@@ -123,8 +123,7 @@ export class PutBucketAccelerateConfigurationCommand extends $Command
       getSerdePlugin(config, this.serialize, this.deserialize),
       getEndpointPlugin(config, Command.getEndpointParameterInstructions()),
       getFlexibleChecksumsPlugin(config, {
-        requestAlgorithmMember: "ChecksumAlgorithm",
-        requestAlgorithmMemberHttpHeader: "x-amz-sdk-checksum-algorithm",
+        requestAlgorithmMember: { httpHeader: "x-amz-sdk-checksum-algorithm", name: "ChecksumAlgorithm" },
         requestChecksumRequired: false,
       }),
     ];
diff --git a/clients/client-s3/src/commands/PutBucketAclCommand.ts b/clients/client-s3/src/commands/PutBucketAclCommand.ts
index 12aa7505ab7d..9574345913da 100644
--- a/clients/client-s3/src/commands/PutBucketAclCommand.ts
+++ b/clients/client-s3/src/commands/PutBucketAclCommand.ts
@@ -314,8 +314,7 @@ export class PutBucketAclCommand extends $Command
       getSerdePlugin(config, this.serialize, this.deserialize),
       getEndpointPlugin(config, Command.getEndpointParameterInstructions()),
       getFlexibleChecksumsPlugin(config, {
-        requestAlgorithmMember: "ChecksumAlgorithm",
-        requestAlgorithmMemberHttpHeader: "x-amz-sdk-checksum-algorithm",
+        requestAlgorithmMember: { httpHeader: "x-amz-sdk-checksum-algorithm", name: "ChecksumAlgorithm" },
         requestChecksumRequired: true,
       }),
     ];
diff --git a/clients/client-s3/src/commands/PutBucketCorsCommand.ts b/clients/client-s3/src/commands/PutBucketCorsCommand.ts
index 32d7a3cbf238..b828bd29765c 100644
--- a/clients/client-s3/src/commands/PutBucketCorsCommand.ts
+++ b/clients/client-s3/src/commands/PutBucketCorsCommand.ts
@@ -198,8 +198,7 @@ export class PutBucketCorsCommand extends $Command
       getSerdePlugin(config, this.serialize, this.deserialize),
       getEndpointPlugin(config, Command.getEndpointParameterInstructions()),
       getFlexibleChecksumsPlugin(config, {
-        requestAlgorithmMember: "ChecksumAlgorithm",
-        requestAlgorithmMemberHttpHeader: "x-amz-sdk-checksum-algorithm",
+        requestAlgorithmMember: { httpHeader: "x-amz-sdk-checksum-algorithm", name: "ChecksumAlgorithm" },
         requestChecksumRequired: true,
       }),
     ];
diff --git a/clients/client-s3/src/commands/PutBucketEncryptionCommand.ts b/clients/client-s3/src/commands/PutBucketEncryptionCommand.ts
index fd57c71d1a37..527ffc49ef55 100644
--- a/clients/client-s3/src/commands/PutBucketEncryptionCommand.ts
+++ b/clients/client-s3/src/commands/PutBucketEncryptionCommand.ts
@@ -214,8 +214,7 @@ export class PutBucketEncryptionCommand extends $Command
       getSerdePlugin(config, this.serialize, this.deserialize),
       getEndpointPlugin(config, Command.getEndpointParameterInstructions()),
       getFlexibleChecksumsPlugin(config, {
-        requestAlgorithmMember: "ChecksumAlgorithm",
-        requestAlgorithmMemberHttpHeader: "x-amz-sdk-checksum-algorithm",
+        requestAlgorithmMember: { httpHeader: "x-amz-sdk-checksum-algorithm", name: "ChecksumAlgorithm" },
         requestChecksumRequired: true,
       }),
     ];
diff --git a/clients/client-s3/src/commands/PutBucketLifecycleConfigurationCommand.ts b/clients/client-s3/src/commands/PutBucketLifecycleConfigurationCommand.ts
index 784d751d7bc2..2f7d765d6084 100644
--- a/clients/client-s3/src/commands/PutBucketLifecycleConfigurationCommand.ts
+++ b/clients/client-s3/src/commands/PutBucketLifecycleConfigurationCommand.ts
@@ -304,8 +304,7 @@ export class PutBucketLifecycleConfigurationCommand extends $Command
       getSerdePlugin(config, this.serialize, this.deserialize),
       getEndpointPlugin(config, Command.getEndpointParameterInstructions()),
       getFlexibleChecksumsPlugin(config, {
-        requestAlgorithmMember: "ChecksumAlgorithm",
-        requestAlgorithmMemberHttpHeader: "x-amz-sdk-checksum-algorithm",
+        requestAlgorithmMember: { httpHeader: "x-amz-sdk-checksum-algorithm", name: "ChecksumAlgorithm" },
         requestChecksumRequired: true,
       }),
       getThrow200ExceptionsPlugin(config),
diff --git a/clients/client-s3/src/commands/PutBucketLoggingCommand.ts b/clients/client-s3/src/commands/PutBucketLoggingCommand.ts
index 147483e2fe0a..ef056ca5c10d 100644
--- a/clients/client-s3/src/commands/PutBucketLoggingCommand.ts
+++ b/clients/client-s3/src/commands/PutBucketLoggingCommand.ts
@@ -214,8 +214,7 @@ export class PutBucketLoggingCommand extends $Command
       getSerdePlugin(config, this.serialize, this.deserialize),
       getEndpointPlugin(config, Command.getEndpointParameterInstructions()),
       getFlexibleChecksumsPlugin(config, {
-        requestAlgorithmMember: "ChecksumAlgorithm",
-        requestAlgorithmMemberHttpHeader: "x-amz-sdk-checksum-algorithm",
+        requestAlgorithmMember: { httpHeader: "x-amz-sdk-checksum-algorithm", name: "ChecksumAlgorithm" },
         requestChecksumRequired: true,
       }),
     ];
diff --git a/clients/client-s3/src/commands/PutBucketPolicyCommand.ts b/clients/client-s3/src/commands/PutBucketPolicyCommand.ts
index c34e83a26b0c..e92bb9413401 100644
--- a/clients/client-s3/src/commands/PutBucketPolicyCommand.ts
+++ b/clients/client-s3/src/commands/PutBucketPolicyCommand.ts
@@ -167,8 +167,7 @@ export class PutBucketPolicyCommand extends $Command
       getSerdePlugin(config, this.serialize, this.deserialize),
       getEndpointPlugin(config, Command.getEndpointParameterInstructions()),
       getFlexibleChecksumsPlugin(config, {
-        requestAlgorithmMember: "ChecksumAlgorithm",
-        requestAlgorithmMemberHttpHeader: "x-amz-sdk-checksum-algorithm",
+        requestAlgorithmMember: { httpHeader: "x-amz-sdk-checksum-algorithm", name: "ChecksumAlgorithm" },
         requestChecksumRequired: true,
       }),
     ];
diff --git a/clients/client-s3/src/commands/PutBucketReplicationCommand.ts b/clients/client-s3/src/commands/PutBucketReplicationCommand.ts
index c80902905ea5..ed78085b6a47 100644
--- a/clients/client-s3/src/commands/PutBucketReplicationCommand.ts
+++ b/clients/client-s3/src/commands/PutBucketReplicationCommand.ts
@@ -238,8 +238,7 @@ export class PutBucketReplicationCommand extends $Command
       getSerdePlugin(config, this.serialize, this.deserialize),
       getEndpointPlugin(config, Command.getEndpointParameterInstructions()),
       getFlexibleChecksumsPlugin(config, {
-        requestAlgorithmMember: "ChecksumAlgorithm",
-        requestAlgorithmMemberHttpHeader: "x-amz-sdk-checksum-algorithm",
+        requestAlgorithmMember: { httpHeader: "x-amz-sdk-checksum-algorithm", name: "ChecksumAlgorithm" },
         requestChecksumRequired: true,
       }),
     ];
diff --git a/clients/client-s3/src/commands/PutBucketRequestPaymentCommand.ts b/clients/client-s3/src/commands/PutBucketRequestPaymentCommand.ts
index 78a39025471c..b163f1cd900f 100644
--- a/clients/client-s3/src/commands/PutBucketRequestPaymentCommand.ts
+++ b/clients/client-s3/src/commands/PutBucketRequestPaymentCommand.ts
@@ -114,8 +114,7 @@ export class PutBucketRequestPaymentCommand extends $Command
       getSerdePlugin(config, this.serialize, this.deserialize),
       getEndpointPlugin(config, Command.getEndpointParameterInstructions()),
       getFlexibleChecksumsPlugin(config, {
-        requestAlgorithmMember: "ChecksumAlgorithm",
-        requestAlgorithmMemberHttpHeader: "x-amz-sdk-checksum-algorithm",
+        requestAlgorithmMember: { httpHeader: "x-amz-sdk-checksum-algorithm", name: "ChecksumAlgorithm" },
         requestChecksumRequired: true,
       }),
     ];
diff --git a/clients/client-s3/src/commands/PutBucketTaggingCommand.ts b/clients/client-s3/src/commands/PutBucketTaggingCommand.ts
index e6d51ba191ed..0e2ad316eda8 100644
--- a/clients/client-s3/src/commands/PutBucketTaggingCommand.ts
+++ b/clients/client-s3/src/commands/PutBucketTaggingCommand.ts
@@ -168,8 +168,7 @@ export class PutBucketTaggingCommand extends $Command
       getSerdePlugin(config, this.serialize, this.deserialize),
       getEndpointPlugin(config, Command.getEndpointParameterInstructions()),
       getFlexibleChecksumsPlugin(config, {
-        requestAlgorithmMember: "ChecksumAlgorithm",
-        requestAlgorithmMemberHttpHeader: "x-amz-sdk-checksum-algorithm",
+        requestAlgorithmMember: { httpHeader: "x-amz-sdk-checksum-algorithm", name: "ChecksumAlgorithm" },
         requestChecksumRequired: true,
       }),
     ];
diff --git a/clients/client-s3/src/commands/PutBucketVersioningCommand.ts b/clients/client-s3/src/commands/PutBucketVersioningCommand.ts
index 46c08e37a79b..fabfce34b465 100644
--- a/clients/client-s3/src/commands/PutBucketVersioningCommand.ts
+++ b/clients/client-s3/src/commands/PutBucketVersioningCommand.ts
@@ -148,8 +148,7 @@ export class PutBucketVersioningCommand extends $Command
       getSerdePlugin(config, this.serialize, this.deserialize),
       getEndpointPlugin(config, Command.getEndpointParameterInstructions()),
       getFlexibleChecksumsPlugin(config, {
-        requestAlgorithmMember: "ChecksumAlgorithm",
-        requestAlgorithmMemberHttpHeader: "x-amz-sdk-checksum-algorithm",
+        requestAlgorithmMember: { httpHeader: "x-amz-sdk-checksum-algorithm", name: "ChecksumAlgorithm" },
         requestChecksumRequired: true,
       }),
     ];
diff --git a/clients/client-s3/src/commands/PutBucketWebsiteCommand.ts b/clients/client-s3/src/commands/PutBucketWebsiteCommand.ts
index 7b1cc50f7ddb..a56df82c4871 100644
--- a/clients/client-s3/src/commands/PutBucketWebsiteCommand.ts
+++ b/clients/client-s3/src/commands/PutBucketWebsiteCommand.ts
@@ -249,8 +249,7 @@ export class PutBucketWebsiteCommand extends $Command
       getSerdePlugin(config, this.serialize, this.deserialize),
       getEndpointPlugin(config, Command.getEndpointParameterInstructions()),
       getFlexibleChecksumsPlugin(config, {
-        requestAlgorithmMember: "ChecksumAlgorithm",
-        requestAlgorithmMemberHttpHeader: "x-amz-sdk-checksum-algorithm",
+        requestAlgorithmMember: { httpHeader: "x-amz-sdk-checksum-algorithm", name: "ChecksumAlgorithm" },
         requestChecksumRequired: true,
       }),
     ];
diff --git a/clients/client-s3/src/commands/PutObjectAclCommand.ts b/clients/client-s3/src/commands/PutObjectAclCommand.ts
index 3248b7e0c015..f51c2373394c 100644
--- a/clients/client-s3/src/commands/PutObjectAclCommand.ts
+++ b/clients/client-s3/src/commands/PutObjectAclCommand.ts
@@ -313,8 +313,7 @@ export class PutObjectAclCommand extends $Command
       getSerdePlugin(config, this.serialize, this.deserialize),
       getEndpointPlugin(config, Command.getEndpointParameterInstructions()),
       getFlexibleChecksumsPlugin(config, {
-        requestAlgorithmMember: "ChecksumAlgorithm",
-        requestAlgorithmMemberHttpHeader: "x-amz-sdk-checksum-algorithm",
+        requestAlgorithmMember: { httpHeader: "x-amz-sdk-checksum-algorithm", name: "ChecksumAlgorithm" },
         requestChecksumRequired: true,
       }),
       getThrow200ExceptionsPlugin(config),
diff --git a/clients/client-s3/src/commands/PutObjectCommand.ts b/clients/client-s3/src/commands/PutObjectCommand.ts
index ea55b20e73e7..85b924517a4b 100644
--- a/clients/client-s3/src/commands/PutObjectCommand.ts
+++ b/clients/client-s3/src/commands/PutObjectCommand.ts
@@ -463,8 +463,7 @@ export class PutObjectCommand extends $Command
       getSerdePlugin(config, this.serialize, this.deserialize),
       getEndpointPlugin(config, Command.getEndpointParameterInstructions()),
       getFlexibleChecksumsPlugin(config, {
-        requestAlgorithmMember: "ChecksumAlgorithm",
-        requestAlgorithmMemberHttpHeader: "x-amz-sdk-checksum-algorithm",
+        requestAlgorithmMember: { httpHeader: "x-amz-sdk-checksum-algorithm", name: "ChecksumAlgorithm" },
         requestChecksumRequired: false,
       }),
       getCheckContentLengthHeaderPlugin(config),
diff --git a/clients/client-s3/src/commands/PutObjectLegalHoldCommand.ts b/clients/client-s3/src/commands/PutObjectLegalHoldCommand.ts
index 863f8651f072..c7dc9fbede3d 100644
--- a/clients/client-s3/src/commands/PutObjectLegalHoldCommand.ts
+++ b/clients/client-s3/src/commands/PutObjectLegalHoldCommand.ts
@@ -91,8 +91,7 @@ export class PutObjectLegalHoldCommand extends $Command
       getSerdePlugin(config, this.serialize, this.deserialize),
       getEndpointPlugin(config, Command.getEndpointParameterInstructions()),
       getFlexibleChecksumsPlugin(config, {
-        requestAlgorithmMember: "ChecksumAlgorithm",
-        requestAlgorithmMemberHttpHeader: "x-amz-sdk-checksum-algorithm",
+        requestAlgorithmMember: { httpHeader: "x-amz-sdk-checksum-algorithm", name: "ChecksumAlgorithm" },
         requestChecksumRequired: true,
       }),
       getThrow200ExceptionsPlugin(config),
diff --git a/clients/client-s3/src/commands/PutObjectLockConfigurationCommand.ts b/clients/client-s3/src/commands/PutObjectLockConfigurationCommand.ts
index 247d5c326295..259fc0a56171 100644
--- a/clients/client-s3/src/commands/PutObjectLockConfigurationCommand.ts
+++ b/clients/client-s3/src/commands/PutObjectLockConfigurationCommand.ts
@@ -114,8 +114,7 @@ export class PutObjectLockConfigurationCommand extends $Command
       getSerdePlugin(config, this.serialize, this.deserialize),
       getEndpointPlugin(config, Command.getEndpointParameterInstructions()),
       getFlexibleChecksumsPlugin(config, {
-        requestAlgorithmMember: "ChecksumAlgorithm",
-        requestAlgorithmMemberHttpHeader: "x-amz-sdk-checksum-algorithm",
+        requestAlgorithmMember: { httpHeader: "x-amz-sdk-checksum-algorithm", name: "ChecksumAlgorithm" },
         requestChecksumRequired: true,
       }),
       getThrow200ExceptionsPlugin(config),
diff --git a/clients/client-s3/src/commands/PutObjectRetentionCommand.ts b/clients/client-s3/src/commands/PutObjectRetentionCommand.ts
index 1a03e54aeceb..9db58143cd28 100644
--- a/clients/client-s3/src/commands/PutObjectRetentionCommand.ts
+++ b/clients/client-s3/src/commands/PutObjectRetentionCommand.ts
@@ -94,8 +94,7 @@ export class PutObjectRetentionCommand extends $Command
       getSerdePlugin(config, this.serialize, this.deserialize),
       getEndpointPlugin(config, Command.getEndpointParameterInstructions()),
       getFlexibleChecksumsPlugin(config, {
-        requestAlgorithmMember: "ChecksumAlgorithm",
-        requestAlgorithmMemberHttpHeader: "x-amz-sdk-checksum-algorithm",
+        requestAlgorithmMember: { httpHeader: "x-amz-sdk-checksum-algorithm", name: "ChecksumAlgorithm" },
         requestChecksumRequired: true,
       }),
       getThrow200ExceptionsPlugin(config),
diff --git a/clients/client-s3/src/commands/PutObjectTaggingCommand.ts b/clients/client-s3/src/commands/PutObjectTaggingCommand.ts
index 7fcbf2aa1542..36035d1b6fcf 100644
--- a/clients/client-s3/src/commands/PutObjectTaggingCommand.ts
+++ b/clients/client-s3/src/commands/PutObjectTaggingCommand.ts
@@ -174,8 +174,7 @@ export class PutObjectTaggingCommand extends $Command
       getSerdePlugin(config, this.serialize, this.deserialize),
       getEndpointPlugin(config, Command.getEndpointParameterInstructions()),
       getFlexibleChecksumsPlugin(config, {
-        requestAlgorithmMember: "ChecksumAlgorithm",
-        requestAlgorithmMemberHttpHeader: "x-amz-sdk-checksum-algorithm",
+        requestAlgorithmMember: { httpHeader: "x-amz-sdk-checksum-algorithm", name: "ChecksumAlgorithm" },
         requestChecksumRequired: true,
       }),
       getThrow200ExceptionsPlugin(config),
diff --git a/clients/client-s3/src/commands/PutPublicAccessBlockCommand.ts b/clients/client-s3/src/commands/PutPublicAccessBlockCommand.ts
index bd18f8531e12..aa4b74789ab5 100644
--- a/clients/client-s3/src/commands/PutPublicAccessBlockCommand.ts
+++ b/clients/client-s3/src/commands/PutPublicAccessBlockCommand.ts
@@ -122,8 +122,7 @@ export class PutPublicAccessBlockCommand extends $Command
       getSerdePlugin(config, this.serialize, this.deserialize),
       getEndpointPlugin(config, Command.getEndpointParameterInstructions()),
       getFlexibleChecksumsPlugin(config, {
-        requestAlgorithmMember: "ChecksumAlgorithm",
-        requestAlgorithmMemberHttpHeader: "x-amz-sdk-checksum-algorithm",
+        requestAlgorithmMember: { httpHeader: "x-amz-sdk-checksum-algorithm", name: "ChecksumAlgorithm" },
         requestChecksumRequired: true,
       }),
     ];
diff --git a/clients/client-s3/src/commands/RestoreObjectCommand.ts b/clients/client-s3/src/commands/RestoreObjectCommand.ts
index 4ca11760b8f4..a5c8a1648f06 100644
--- a/clients/client-s3/src/commands/RestoreObjectCommand.ts
+++ b/clients/client-s3/src/commands/RestoreObjectCommand.ts
@@ -388,8 +388,7 @@ export class RestoreObjectCommand extends $Command
       getSerdePlugin(config, this.serialize, this.deserialize),
       getEndpointPlugin(config, Command.getEndpointParameterInstructions()),
       getFlexibleChecksumsPlugin(config, {
-        requestAlgorithmMember: "ChecksumAlgorithm",
-        requestAlgorithmMemberHttpHeader: "x-amz-sdk-checksum-algorithm",
+        requestAlgorithmMember: { httpHeader: "x-amz-sdk-checksum-algorithm", name: "ChecksumAlgorithm" },
         requestChecksumRequired: false,
       }),
       getThrow200ExceptionsPlugin(config),
diff --git a/clients/client-s3/src/commands/UploadPartCommand.ts b/clients/client-s3/src/commands/UploadPartCommand.ts
index 1b667f18d094..e2bdf5cad0c5 100644
--- a/clients/client-s3/src/commands/UploadPartCommand.ts
+++ b/clients/client-s3/src/commands/UploadPartCommand.ts
@@ -321,8 +321,7 @@ export class UploadPartCommand extends $Command
       getSerdePlugin(config, this.serialize, this.deserialize),
       getEndpointPlugin(config, Command.getEndpointParameterInstructions()),
       getFlexibleChecksumsPlugin(config, {
-        requestAlgorithmMember: "ChecksumAlgorithm",
-        requestAlgorithmMemberHttpHeader: "x-amz-sdk-checksum-algorithm",
+        requestAlgorithmMember: { httpHeader: "x-amz-sdk-checksum-algorithm", name: "ChecksumAlgorithm" },
         requestChecksumRequired: false,
       }),
       getThrow200ExceptionsPlugin(config),
diff --git a/codegen/smithy-aws-typescript-codegen/src/main/java/software/amazon/smithy/aws/typescript/codegen/AddHttpChecksumDependency.java b/codegen/smithy-aws-typescript-codegen/src/main/java/software/amazon/smithy/aws/typescript/codegen/AddHttpChecksumDependency.java
index 60cc445817a8..34d248be0534 100644
--- a/codegen/smithy-aws-typescript-codegen/src/main/java/software/amazon/smithy/aws/typescript/codegen/AddHttpChecksumDependency.java
+++ b/codegen/smithy-aws-typescript-codegen/src/main/java/software/amazon/smithy/aws/typescript/codegen/AddHttpChecksumDependency.java
@@ -203,7 +203,8 @@ private static Map<String, Object> getPluginFunctionParams(
         HttpChecksumTrait httpChecksumTrait = operation.expectTrait(HttpChecksumTrait.class);
         params.put("requestChecksumRequired", httpChecksumTrait.isRequestChecksumRequired());
         httpChecksumTrait.getRequestAlgorithmMember().ifPresent(requestAlgorithmMember -> {
-            params.put("requestAlgorithmMember", requestAlgorithmMember);
+            Map<String, String> requestAlgorithmMemberMap = new TreeMap<String, String>();
+            requestAlgorithmMemberMap.put("name", requestAlgorithmMember);
 
             // We know that input shape is structure, and contains requestAlgorithmMember.
             StructureShape inputShape =  model.expectShape(operation.getInput().get(), StructureShape.class);
@@ -211,8 +212,10 @@ private static Map<String, Object> getPluginFunctionParams(
 
             // Set requestAlgorithmMemberHttpHeader if HttpHeaderTrait is present.
             requestAlgorithmMemberShape.getTrait(HttpHeaderTrait.class).ifPresent(httpHeaderTrait -> {
-                params.put("requestAlgorithmMemberHttpHeader", httpHeaderTrait.getValue());
+                requestAlgorithmMemberMap.put("httpHeader", httpHeaderTrait.getValue());
             });
+
+            params.put("requestAlgorithmMember", requestAlgorithmMemberMap);
         });
         httpChecksumTrait.getRequestValidationModeMember().ifPresent(requestValidationModeMember -> {
             params.put("requestValidationModeMember", requestValidationModeMember);
diff --git a/packages/middleware-flexible-checksums/src/flexibleChecksumsMiddleware.ts b/packages/middleware-flexible-checksums/src/flexibleChecksumsMiddleware.ts
index bc3d6308851d..7a19714e8755 100644
--- a/packages/middleware-flexible-checksums/src/flexibleChecksumsMiddleware.ts
+++ b/packages/middleware-flexible-checksums/src/flexibleChecksumsMiddleware.ts
@@ -27,15 +27,20 @@ export interface FlexibleChecksumsRequestMiddlewareConfig {
   requestChecksumRequired: boolean;
 
   /**
-   * Defines a top-level operation input member that is used to configure request checksum behavior.
+   * Member that is used to configure request checksum behavior.
    */
-  requestAlgorithmMember?: string;
+  requestAlgorithmMember?: {
+    /**
+     * Defines a top-level operation input member that is used to configure request checksum behavior.
+     */
+    name: string;
 
-  /**
-   * The {@link httpHeader} value for {@link requestAlgorithmMember}, if present.
-   * {@link https://smithy.io/2.0/spec/http-bindings.html#httpheader-trait httpHeader}
-   */
-  requestAlgorithmMemberHttpHeader?: string;
+    /**
+     * The {@link httpHeader} value, if present.
+     * {@link https://smithy.io/2.0/spec/http-bindings.html#httpheader-trait httpHeader}
+     */
+    httpHeader?: string;
+  };
 }
 
 export const flexibleChecksumsMiddlewareOptions: BuildHandlerOptions = {
@@ -68,7 +73,7 @@ export const flexibleChecksumsMiddleware =
       input,
       {
         requestChecksumRequired,
-        requestAlgorithmMember,
+        requestAlgorithmMember: requestAlgorithmMember?.name,
       },
       !!context.isS3ExpressBucket
     );