diff --git a/IPython/html/static/notebook/js/codecell.js b/IPython/html/static/notebook/js/codecell.js
index b823fa2de..1074892e5 100644
--- a/IPython/html/static/notebook/js/codecell.js
+++ b/IPython/html/static/notebook/js/codecell.js
@@ -209,12 +209,6 @@ var IPython = (function (IPython) {
                 // Don't autocomplete if the part of the line before the cursor
                 // is empty.  In this case, let CodeMirror handle indentation.
                 return false;
-            } else if ((pre_cursor.substr(-1) === "("|| pre_cursor.substr(-1) === " ") && IPython.config.tooltip_on_tab ) {
-                IPython.tooltip.request(that);
-                // Prevent the event from bubbling up.
-                event.stop();
-                // Prevent CodeMirror from handling the tab.
-                return true;
             } else {
                 event.stop();
                 this.completer.startCompletion();
@@ -438,4 +432,4 @@ var IPython = (function (IPython) {
     IPython.CodeCell = CodeCell;
 
     return IPython;
-}(IPython));
\ No newline at end of file
+}(IPython));