diff --git a/mozilla/calendar/resources/content/calendarService.js b/mozilla/calendar/resources/content/calendarService.js
index 7ce942e7eac..c5eadd68d4c 100644
--- a/mozilla/calendar/resources/content/calendarService.js
+++ b/mozilla/calendar/resources/content/calendarService.js
@@ -138,7 +138,7 @@ function (aContentType, aCommand, aWindowTarget, aRequest)
         var args = new Object ();
         args.url = channel.URI.spec;
         dump( "\n\nURL IS "+args.url );
-        w.openDialog("chrome://calendar/content/calendar.xul", "calendar", "chrome,extrachrome,menubar,resizable,scrollbars,status,toolbar", args);
+        w.openDialog("chrome://calendar/content/calendar.xul", "calendar", "chrome,menubar,resizable,scrollbars,status,toolbar,dialog=no", args);
     }
     
 }