diff --git a/change_log.txt b/change_log.txt
index ad6e4255..adfa9807 100644
--- a/change_log.txt
+++ b/change_log.txt
@@ -1,4 +1,5 @@
 04/09/2009
+- fixed execution of filters defined by classes
 - compile the always the content of {block} tags to make shure that the filters are running over it
 - syntax corrections on variable object property
 - syntax corrections on array access in dot syntax
diff --git a/libs/sysplugins/internal.run_filter.php b/libs/sysplugins/internal.run_filter.php
index 00d28e43..71c67e2f 100644
--- a/libs/sysplugins/internal.run_filter.php
+++ b/libs/sysplugins/internal.run_filter.php
@@ -50,8 +50,8 @@ class Smarty_Internal_Run_Filter extends Smarty_Internal_Base {
         } 
         // loop over registerd filters of specified type
         if (!empty($this->smarty->registered_filters[$type])) {
-            foreach ($this->smarty->registered_filters[$type] as $name) {
-                $output = call_user_func_array($this->smarty->registered_filters[$type][$name], array($output, $this->smarty));
+            foreach ($this->smarty->registered_filters[$type] as $key => $name) {
+                $output = call_user_func_array($this->smarty->registered_filters[$type][$key], array($output, $this->smarty));
             } 
         } 
         // return filtered output