diff --git a/includes/common.inc b/includes/common.inc
index 3d73784..8d2a8f1 100644
--- a/includes/common.inc
+++ b/includes/common.inc
@@ -2564,8 +2564,8 @@ function drupal_json($var = NULL) {
  */
 function drupal_urlencode($text) {
   if (variable_get('clean_url', '0')) {
-    return str_replace(array('%2F', '%26', '%23', '//'),
-                       array('/', '%2526', '%2523', '/%252F'),
+    return str_replace(array('%2F', '%', '//'),
+                       array('/', '%25', '/%252F'),
                        rawurlencode($text));
   }
   else {