diff --git a/inc/parser/renderer.php b/inc/parser/renderer.php
index 81c33fe62bd9808d24e47404fa8281e344d0adf4..b54ccf050c4eb64b0fb1f71be7bd06d67a2c6806 100644
--- a/inc/parser/renderer.php
+++ b/inc/parser/renderer.php
@@ -74,7 +74,9 @@ class Doku_Renderer extends DokuWiki_Plugin {
 
       foreach ( $instructions as $instruction ) {
         // execute the callback against ourself
-        call_user_func_array(array(&$this, $instruction[0]),$instruction[1]);
+        if (method_exists($this,$instruction[0])) {
+          call_user_func_array(array($this, $instruction[0]),$instruction[1]);
+        }
       }
     }