diff --git a/modules/swagger-codegen/src/main/resources/Javascript/ApiClient.mustache b/modules/swagger-codegen/src/main/resources/Javascript/ApiClient.mustache
index 30147a1fc0e..a85ebf9fbdd 100644
--- a/modules/swagger-codegen/src/main/resources/Javascript/ApiClient.mustache
+++ b/modules/swagger-codegen/src/main/resources/Javascript/ApiClient.mustache
@@ -40,10 +40,18 @@
      * The authentication methods to be included for all API calls.
      * @type {Array.<String>}
      */
-{{/emitJSDoc}}{{=< >=}}    this.authentications = {<#authMethods><#isBasic>
-      '<name>': {type: 'basic'}</isBasic><#isApiKey>
-      '<name>': {type: 'apiKey', 'in': <#isKeyInHeader>'header'</isKeyInHeader><^isKeyInHeader>'query'</isKeyInHeader>, name: '<keyParamName>'}</isApiKey><#isOAuth>
-      '<name>': {type: 'oauth2'}</isOAuth><#hasMore>,</hasMore></authMethods>
+{{/emitJSDoc}}{{=< >=}}    this.authentications = {
+<#authMethods>
+<#isBasic>
+      '<name>': {type: 'basic'}<^-last>,</-last>
+</isBasic>
+<#isApiKey>
+      '<name>': {type: 'apiKey', 'in': <#isKeyInHeader>'header'</isKeyInHeader><^isKeyInHeader>'query'</isKeyInHeader>, name: '<keyParamName>'}<^-last>,</-last>
+</isApiKey>
+<#isOAuth>
+      '<name>': {type: 'oauth2'}<^-last>,</-last>
+</isOAuth>
+</authMethods>
     };
 <={{ }}=>
 {{#emitJSDoc}}    /**
diff --git a/samples/client/petstore/javascript/src/ApiClient.js b/samples/client/petstore/javascript/src/ApiClient.js
index aab7a6ebf98..1ca3143bc09 100644
--- a/samples/client/petstore/javascript/src/ApiClient.js
+++ b/samples/client/petstore/javascript/src/ApiClient.js
@@ -65,8 +65,8 @@
      */
     this.authentications = {
       'api_key': {type: 'apiKey', 'in': 'header', name: 'api_key'},
-      'http_basic_test': {type: 'basic'}
-      'petstore_auth': {type: 'oauth2'},
+      'http_basic_test': {type: 'basic'},
+      'petstore_auth': {type: 'oauth2'}
     };
     /**
      * The default HTTP headers to be included for all API calls.