diff --git a/lib/swagger-oauth.js b/lib/swagger-oauth.js
index 214a3b9a..fd045400 100644
--- a/lib/swagger-oauth.js
+++ b/lib/swagger-oauth.js
@@ -185,7 +185,7 @@ function initOAuth(opts) {
   popupMask = (o.popupMask||$('#api-common-mask'));
   popupDialog = (o.popupDialog||$('.api-popup-dialog'));
   clientId = (o.clientId||errors.push('missing client id'));
-  clientSecret = (o.clientSecret||errors.push('missing client secret'));
+  clientSecret = (o.clientSecret||null);
   realm = (o.realm||errors.push('missing realm'));
 
   if(errors.length > 0){
@@ -208,11 +208,15 @@ function initOAuth(opts) {
 window.processOAuthCode = function processOAuthCode(data) {
   var params = {
     'client_id': clientId,
-    'client_secret': clientSecret,
     'code': data.code,
     'grant_type': 'authorization_code',
     'redirect_uri': redirect_uri
+  };
+
+  if (clientSecret) {
+    params.client_secret = clientSecret;
   }
+
   $.ajax(
   {
     url : window.swaggerUi.tokenUrl,
@@ -227,7 +231,7 @@ window.processOAuthCode = function processOAuthCode(data) {
       onOAuthComplete("");
     }
   });
-}
+};
 
 window.onOAuthComplete = function onOAuthComplete(token) {
   if(token) {
@@ -284,4 +288,4 @@ window.onOAuthComplete = function onOAuthComplete(token) {
       }
     }
   }
-}
+};
diff --git a/src/main/html/index.html b/src/main/html/index.html
index a7ae94d4..c02ab467 100644
--- a/src/main/html/index.html
+++ b/src/main/html/index.html
@@ -37,7 +37,7 @@
           if(typeof initOAuth == "function") {
             initOAuth({
               clientId: "your-client-id",
-              clientSecret: "your-client-secret",
+              clientSecret: "your-client-secret-if-required",
               realm: "your-realms",
               appName: "your-app-name"
             });