diff --git a/src/project/WorkingSetView.js b/src/project/WorkingSetView.js
index b10ddc9cf37..67ad7d99a81 100644
--- a/src/project/WorkingSetView.js
+++ b/src/project/WorkingSetView.js
@@ -61,6 +61,20 @@ define(function (require, exports, module) {
         $openFilesContainer.triggerHandler("contentChanged");
     }
 
+    /**
+     * @private
+     * adds the style 'vertical-scroll' if a vertical scroll bar is present
+     */
+    function _adjustForScrollbars() {
+        if ($openFilesContainer[0].scrollHeight > $openFilesContainer[0].clientHeight) {
+            if (!$openFilesContainer.hasClass("vertical-scroll")) {
+                $openFilesContainer.addClass("vertical-scroll");
+            }
+        } else {
+            $openFilesContainer.removeClass("vertical-scroll");
+        }
+    }
+    
     /**
      * @private
      * Shows/Hides open files list based on working set content.
@@ -71,7 +85,7 @@ define(function (require, exports, module) {
         } else {
             $openFilesContainer.show();
         }
-        
+        _adjustForScrollbars();
         _fireSelectionChanged();
     }