diff --git a/common/js/xml_handler.js b/common/js/xml_handler.js
index f0c4c9e5f..40aaee3d0 100644
--- a/common/js/xml_handler.js
+++ b/common/js/xml_handler.js
@@ -240,6 +240,7 @@ $.exec_xml = window.exec_xml = function(module, act, params, callback_func, resp
 
 		if(!resp_xml) {
 			alert(_xhr.responseText);
+			filterWait[fo_obj.id] = '';
 			return null;
 		}
 
@@ -267,6 +268,7 @@ $.exec_xml = window.exec_xml = function(module, act, params, callback_func, resp
 			}
 
 			alert( (ret['message']||'An unknown error occured while loading ['+module+'.'+act+']').replace(/\\n/g, '\n') );
+			filterWait[fo_obj.id] = '';
 
 			return null;
 		}