diff --git a/javascript/TabSet.js b/javascript/TabSet.js
index fad57a8cf..d9bcb54b9 100644
--- a/javascript/TabSet.js
+++ b/javascript/TabSet.js
@@ -26,8 +26,8 @@
 			 */
 			rewriteHashlinks: function() {
 				$(this).find('ul a').each(function() {
-					var href = $(this).attr('href').replace(/.*(#.*)/, '$1');
-					if(href) $(this).attr('href', href);
+					var href = $(this).attr('href');
+					if(href) $(this).attr('href', href.replace(/.*(#.*)/, '$1'));
 				});
 			}
 		});