diff --git a/etc/inc/PEAR.inc b/etc/inc/PEAR.inc
index 6fb91a3ef8..b254139de8 100644
--- a/etc/inc/PEAR.inc
+++ b/etc/inc/PEAR.inc
@@ -247,7 +247,7 @@ class PEAR
      * @access  public
      * @return  bool    true if parameter is an error
      */
-    function isError($data, $code = null)
+    public static function isError($data, $code = null)
     {
         if (!is_object($data)) {
              return false;