Index: t3lib/extjs/class.t3lib_extjs_extdirectapi.php
===================================================================
--- t3lib/extjs/class.t3lib_extjs_extdirectapi.php	(revision 6899)
+++ t3lib/extjs/class.t3lib_extjs_extdirectapi.php	(working copy)
@@ -63,7 +63,7 @@
 
 				if (!isset($javascriptNamespaces[$javascriptNamespace])) {
 					$javascriptNamespaces[$javascriptNamespace] = array(
-					    'url' => 'ajax.php?ajaxID=ExtDirect::route&namespace=' . rawurlencode($javascriptNamespace),
+					    'url' => t3lib_div::locationHeaderUrl('ajax.php?ajaxID=ExtDirect::route&namespace=') . rawurlencode($javascriptNamespace),
 					    'type' => 'remoting',
 					    'actions' => array(),
 					    'namespace' => $javascriptNamespace