diff --git a/catalog/includes/functions/general.php b/catalog/includes/functions/general.php
index c245d0d4a..c83ed64f9 100644
--- a/catalog/includes/functions/general.php
+++ b/catalog/includes/functions/general.php
@@ -1295,15 +1295,7 @@ function tep_parse_category_path($cPath) {
     }, explode('_', $cPath));
 
 // make sure no duplicate category IDs exist which could lock the server in a loop
-    $tmp_array = array();
-    $n = sizeof($cPath_array);
-    for ($i=0; $i<$n; $i++) {
-      if (!in_array($cPath_array[$i], $tmp_array)) {
-        $tmp_array[] = $cPath_array[$i];
-      }
-    }
-
-    return $tmp_array;
+    return array_keys(array_flip($cPath_array));
   }
 
 ////