diff --git a/IPython/html/static/notebook/js/quickhelp.js b/IPython/html/static/notebook/js/quickhelp.js
index 61aa553..08b01d5 100644
--- a/IPython/html/static/notebook/js/quickhelp.js
+++ b/IPython/html/static/notebook/js/quickhelp.js
@@ -119,7 +119,7 @@ var IPython = (function (IPython) {
s = s.replace(/-$/, 'minus'); // catch shortcuts using '-' key
var keys = s.split('-');
var k, i;
- for (i in keys) {
+ for (i=0; i < keys.length; i++) {
k = keys[i];
if ( k.length == 1 ) {
keys[i] = "" + k + "
";