diff --git a/debug_toolbar/static/debug_toolbar/js/toolbar.js b/debug_toolbar/static/debug_toolbar/js/toolbar.js
index 72a0f56ef..9c89ca3b7 100644
--- a/debug_toolbar/static/debug_toolbar/js/toolbar.js
+++ b/debug_toolbar/static/debug_toolbar/js/toolbar.js
@@ -248,7 +248,7 @@
                 });
             }
         },
-        hide_one_level: function(skipDebugWindow) {
+        hide_one_level: function() {
             var djDebug = document.getElementBy('djDebug');
             if ($$.visible(djDebug.querySelector('#djDebugWindow'))) {
                 $$.hide(djDebug.querySelector('#djDebugWindow'));