diff --git a/UI/WebServerResources/UIxComponentEditor.js b/UI/WebServerResources/UIxComponentEditor.js
index 3fc75fffe..66e3d3913 100644
--- a/UI/WebServerResources/UIxComponentEditor.js
+++ b/UI/WebServerResources/UIxComponentEditor.js
@@ -402,7 +402,7 @@ function onOkButtonClick (e) {
         action = 'tentative';
     else if (value == 4) {
         var url = ApplicationBaseURL + activeCalendar + '/' + activeComponent;
-        document.modifyEventAjaxRequest = delegateInvitation(url, modifyEventCallback);
+        delegateInvitation(url, modifyEventCallback);
     }
 
     if (action != "")
diff --git a/UI/WebServerResources/generic.js b/UI/WebServerResources/generic.js
index 12823f9da..1ca0491e0 100644
--- a/UI/WebServerResources/generic.js
+++ b/UI/WebServerResources/generic.js
@@ -1588,8 +1588,8 @@ function delegateInvitation(componentUrl, callbackFunction, callbackData) {
         var receiveUpdates = false; //confirm("Do you want to keep receiving updates on the event?");
         var urlstr = componentUrl + "/delegate";
         var parameters = "to=" + delegatedTo + "&receiveUpdates=" + (receiveUpdates?"YES":"NO");
-        return triggerAjaxRequest(urlstr, callbackFunction, callbackData, parameters,
-                                  { "Content-type": "application/x-www-form-urlencoded" });
+        triggerAjaxRequest(urlstr, callbackFunction, callbackData, parameters,
+                           { "Content-type": "application/x-www-form-urlencoded" });
     }
 }