diff --git a/plugins/configuration/tasks/class_tasksMail.inc b/plugins/configuration/tasks/class_tasksMail.inc
index 3f8e3895fa4cca2dbde9205e6cc903a4e6157944..8eeba24518c2c32e63b43ee64d689d54069c9469 100644
--- a/plugins/configuration/tasks/class_tasksMail.inc
+++ b/plugins/configuration/tasks/class_tasksMail.inc
@@ -141,7 +141,7 @@ class tasksMail extends simplePlugin
     $listOfDN = tasks::extractMembersFromGroups($attributeValue);
     // send the objectype and attrs name to the below method
     $this->attributesAccess['fdTasksEmailsFromDN']->setValue(
-      array_values($this->getEmailsFromSelectedDN($mailObject, $mailAttr, $listOfDN))
+      array_values(static::getEmailsFromSelectedDN($mailObject, $mailAttr, $listOfDN))
     );
 
     return TRUE;