diff --git a/catalog/admin/includes/functions/html_output.php b/catalog/admin/includes/functions/html_output.php
index 92c41f0c2..81997be5c 100644
--- a/catalog/admin/includes/functions/html_output.php
+++ b/catalog/admin/includes/functions/html_output.php
@@ -58,7 +58,7 @@ function tep_href_link($page = '', $parameters = '', $connection = 'SSL', $add_s
       $link .= $separator . tep_output_string($_sid);
     }
 
-    while (strstr($link, '&&')) $link = str_replace('&&', '&', $link);
+    while (strpos($link, '&&') !== false) $link = str_replace('&&', '&', $link);
 
     return $link;
   }