diff --git a/client/src/www/app/outline_server_repository/config.ts b/client/src/www/app/outline_server_repository/config.ts
index e6f61e1aa1..3ba7b8abb1 100644
--- a/client/src/www/app/outline_server_repository/config.ts
+++ b/client/src/www/app/outline_server_repository/config.ts
@@ -144,8 +144,8 @@ export async function parseAccessKey(accessKeyText: string): Promise<ServiceConf
   }
 }
 
-export function validateAccessKey(accessKey: string) {
-  getAddressFromTransportConfig(accessKey);
+export async function validateAccessKey(accessKey: string) {
+  await parseAccessKey(accessKey);
 }
 
 /**
diff --git a/client/src/www/app/outline_server_repository/index.ts b/client/src/www/app/outline_server_repository/index.ts
index 4c899e4c6a..00bdfced4c 100644
--- a/client/src/www/app/outline_server_repository/index.ts
+++ b/client/src/www/app/outline_server_repository/index.ts
@@ -138,7 +138,7 @@ class OutlineServerRepository implements ServerRepository {
     return this.serverById.get(serverId)?.server;
   }
 
-  async add(accessKey: string) {
+  async add(accessKey: string): Promise<void> {
     const alreadyAddedServer = this.serverFromAccessKey(accessKey);
     if (alreadyAddedServer) {
       throw new errors.ServerAlreadyAdded(alreadyAddedServer);
diff --git a/client/src/www/app/outline_server_repository/outline_server_repository.spec.ts b/client/src/www/app/outline_server_repository/outline_server_repository.spec.ts
index 07d704944b..5b36487ab5 100644
--- a/client/src/www/app/outline_server_repository/outline_server_repository.spec.ts
+++ b/client/src/www/app/outline_server_repository/outline_server_repository.spec.ts
@@ -161,10 +161,12 @@ describe('OutlineServerRepository', () => {
 
   it('add throws on invalid access keys', async () => {
     const repo = await newTestRepo(new EventQueue(), new InMemoryStorage());
-    expect(async () => await repo.add('ss://invalid')).toThrowError(
+    await expectAsync(repo.add('ss://invalid')).toBeRejectedWithError(
+      ServerAccessKeyInvalid
+    );
+    await expectAsync(repo.add('')).toBeRejectedWithError(
       ServerAccessKeyInvalid
     );
-    expect(async () => await repo.add('')).toThrowError(ServerAccessKeyInvalid);
   });
 
   it('getAll returns added servers', async () => {
@@ -307,53 +309,25 @@ describe('OutlineServerRepository', () => {
 
   it('validates static access keys', async () => {
     // Invalid access keys.
-    expect(async () => await config.validateAccessKey('')).toThrowError(
+    await expectAsync(config.validateAccessKey('')).toBeRejectedWithError(
       ServerAccessKeyInvalid
     );
-    expect(
-      async () => await config.validateAccessKey('ss://invalid')
-    ).toThrowError(ServerAccessKeyInvalid);
+    await expectAsync(
+      config.validateAccessKey('ss://invalid')
+    ).toBeRejectedWithError(ServerAccessKeyInvalid);
     // IPv6 host.
     expect(
-      async () =>
-        await config.validateAccessKey(
-          SIP002_URI.stringify(
-            makeConfig({
-              host: '2001:0:ce49:7601:e866:efff:62c3:fffe',
-              port: 443,
-              password: 'test',
-              method: 'chacha20-ietf-poly1305',
-            })
-          )
+      await config.validateAccessKey(
+        SIP002_URI.stringify(
+          makeConfig({
+            host: '2001:0:ce49:7601:e866:efff:62c3:fffe',
+            port: 443,
+            password: 'test',
+            method: 'chacha20-ietf-poly1305',
+          })
         )
+      )
     ).toBeTruthy();
-    // Unsupported ciphers.
-    expect(
-      async () =>
-        await config.validateAccessKey(
-          SIP002_URI.stringify(
-            makeConfig({
-              host: '127.0.0.1',
-              port: 443,
-              password: 'test',
-              method: 'aes-256-ctr',
-            })
-          )
-        )
-    ).toThrowError(ServerAccessKeyInvalid);
-    expect(
-      async () =>
-        await config.validateAccessKey(
-          SIP002_URI.stringify(
-            makeConfig({
-              host: '127.0.0.1',
-              port: 443,
-              password: 'test',
-              method: 'chacha20',
-            })
-          )
-        )
-    ).toThrowError(ServerAccessKeyInvalid);
   });
 });