diff --git a/lib/swagger-oauth.js b/lib/swagger-oauth.js
index c4e144fa..a7a7191e 100644
--- a/lib/swagger-oauth.js
+++ b/lib/swagger-oauth.js
@@ -147,7 +147,7 @@ function handleLogin() {
     url += '&redirect_uri=' + encodeURIComponent(redirectUrl);
     url += '&realm=' + encodeURIComponent(realm);
     url += '&client_id=' + encodeURIComponent(clientId);
-    url += '&scope=' + encodeURIComponent(scopes);
+    url += '&scope=' + encodeURIComponent(scopes.join(' '));
 
     window.open(url);
   });