diff --git a/packages/amazon-cognito-identity-js/src/Client.js b/packages/amazon-cognito-identity-js/src/Client.js
index ccfcec27ccf..ddf07c83bc0 100644
--- a/packages/amazon-cognito-identity-js/src/Client.js
+++ b/packages/amazon-cognito-identity-js/src/Client.js
@@ -23,7 +23,7 @@ export default class Client {
     const headers = {
       'Content-Type': 'application/x-amz-json-1.1',
       'X-Amz-Target': `AWSCognitoIdentityProviderService.${operation}`,
-      'X-Amz-User-Agent': this.userAgent,
+      'X-Amz-User-Agent': this.userAgent
     };
 
     const options = {
@@ -31,7 +31,7 @@ export default class Client {
       method: 'POST',
       mode: 'cors',
       cache: 'no-cache',
-      body: JSON.stringify(params),
+      body: JSON.stringify(params)
     };
 
     let response;
@@ -58,7 +58,7 @@ export default class Client {
         const error = {
           code,
           name: code,
-          message: (data.message || data.Message || null),
+          message: (data.message || data.Message || null)
         };
         return callback(error);
       })
@@ -73,7 +73,7 @@ export default class Client {
               code,
               name: code,
               statusCode: response.status,
-              message: (response.status) ? response.status.toString() : null,
+              message: (response.status) ? response.status.toString() : null
             };
           } catch (ex) {
               // pass through so it doesn't get swallowed if we can't parse it
@@ -83,7 +83,7 @@ export default class Client {
           error = {
             code: err.name,
             name: err.name,
-            message: err.message,
+            message: err.message
           };
         // finally case will return 'UnknownError'
         }