diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3a754a55..f5e7b9d8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,9 @@ Check [Keep a Changelog](http://keepachangelog.com/) for recommendations on how
 ## Unreleased
  - TBD
 
+## 10.1.2
+ - [Fix ABI endpoint definition: attribute "mutability"](https://github.com/ElrondNetwork/elrond-sdk-erdjs/pull/200)
+
 ## 10.1.1
  - [Add missing package "blake2b" (removed by mistake)](https://github.com/ElrondNetwork/elrond-sdk-erdjs/pull/199)
 
diff --git a/package-lock.json b/package-lock.json
index 1f76a88d..dd4a93f9 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@elrondnetwork/erdjs",
-  "version": "10.1.1",
+  "version": "10.1.2",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "@elrondnetwork/erdjs",
-      "version": "10.1.1",
+      "version": "10.1.2",
       "license": "GPL-3.0-or-later",
       "dependencies": {
         "@elrondnetwork/transaction-decoder": "0.1.0",
@@ -2069,9 +2069,9 @@
       }
     },
     "node_modules/electron-to-chromium": {
-      "version": "1.4.111",
-      "resolved": "https://registry.npmjs.org/electron-to-chromium/-/electron-to-chromium-1.4.111.tgz",
-      "integrity": "sha512-/s3+fwhKf1YK4k7btOImOzCQLpUjS6MaPf0ODTNuT4eTM1Bg4itBpLkydhOzJmpmH6Z9eXFyuuK5czsmzRzwtw==",
+      "version": "1.4.113",
+      "resolved": "https://registry.npmjs.org/electron-to-chromium/-/electron-to-chromium-1.4.113.tgz",
+      "integrity": "sha512-s30WKxp27F3bBH6fA07FYL2Xm/FYnYrKpMjHr3XVCTUb9anAyZn/BeZfPWgTZGAbJeT4NxNwISSbLcYZvggPMA==",
       "dev": true
     },
     "node_modules/elliptic": {
@@ -7422,9 +7422,9 @@
       }
     },
     "electron-to-chromium": {
-      "version": "1.4.111",
-      "resolved": "https://registry.npmjs.org/electron-to-chromium/-/electron-to-chromium-1.4.111.tgz",
-      "integrity": "sha512-/s3+fwhKf1YK4k7btOImOzCQLpUjS6MaPf0ODTNuT4eTM1Bg4itBpLkydhOzJmpmH6Z9eXFyuuK5czsmzRzwtw==",
+      "version": "1.4.113",
+      "resolved": "https://registry.npmjs.org/electron-to-chromium/-/electron-to-chromium-1.4.113.tgz",
+      "integrity": "sha512-s30WKxp27F3bBH6fA07FYL2Xm/FYnYrKpMjHr3XVCTUb9anAyZn/BeZfPWgTZGAbJeT4NxNwISSbLcYZvggPMA==",
       "dev": true
     },
     "elliptic": {
diff --git a/package.json b/package.json
index d00a4d82..4214aaa6 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@elrondnetwork/erdjs",
-  "version": "10.1.1",
+  "version": "10.1.2",
   "description": "Smart Contracts interaction framework",
   "main": "out/index.js",
   "types": "out/index.d.js",
diff --git a/src/smartcontracts/typesystem/abiRegistry.spec.ts b/src/smartcontracts/typesystem/abiRegistry.spec.ts
index 30e41de6..fb2cd76e 100644
--- a/src/smartcontracts/typesystem/abiRegistry.spec.ts
+++ b/src/smartcontracts/typesystem/abiRegistry.spec.ts
@@ -30,6 +30,10 @@ describe("test abi registry", () => {
         let start = lottery.getEndpoint("start");
         let getStatus = lottery.getEndpoint("status");
         let getLotteryInfo = lottery.getEndpoint("getLotteryInfo");
+
+        assert.isFalse(start.modifiers.isReadonly());
+        assert.isTrue(getStatus.modifiers.isReadonly());
+        assert.isTrue(getLotteryInfo.modifiers.isReadonly());
         assert.instanceOf(start.input[0].type, BytesType);
         assert.instanceOf(start.input[1].type, TokenIdentifierType);
         assert.instanceOf(start.input[2].type, BigUIntType);
diff --git a/src/smartcontracts/typesystem/endpoint.ts b/src/smartcontracts/typesystem/endpoint.ts
index 280c2333..a87f56ac 100644
--- a/src/smartcontracts/typesystem/endpoint.ts
+++ b/src/smartcontracts/typesystem/endpoint.ts
@@ -23,7 +23,7 @@ export class EndpointDefinition {
 
     static fromJSON(json: {
         name: string,
-        storageModifier: string,
+        mutability: string,
         payableInTokens: string[],
         inputs: any[],
         outputs: []
@@ -35,18 +35,18 @@ export class EndpointDefinition {
 
         let input = json.inputs.map(param => EndpointParameterDefinition.fromJSON(param));
         let output = json.outputs.map(param => EndpointParameterDefinition.fromJSON(param));
-        let modifiers = new EndpointModifiers(json.storageModifier, json.payableInTokens);
+        let modifiers = new EndpointModifiers(json.mutability, json.payableInTokens);
 
         return new EndpointDefinition(json.name, input, output, modifiers);
     }
 }
 
 export class EndpointModifiers {
-    readonly storageModifier: string;
+    readonly mutability: string;
     readonly payableInTokens: string[];
 
-    constructor(storageModifier: string, payableInTokens: string[]) {
-        this.storageModifier = storageModifier || "";
+    constructor(mutability: string, payableInTokens: string[]) {
+        this.mutability = mutability || "";
         this.payableInTokens = payableInTokens || [];
     }
 
@@ -75,7 +75,7 @@ export class EndpointModifiers {
     }
 
     isReadonly() {
-        return this.storageModifier == "readonly";
+        return this.mutability == "readonly";
     }
 }