diff --git a/mozilla/calendar/modules/core/public/nsILayer.h b/mozilla/calendar/modules/core/public/nsILayer.h
index 5691550283d..1eb0507a451 100644
--- a/mozilla/calendar/modules/core/public/nsILayer.h
+++ b/mozilla/calendar/modules/core/public/nsILayer.h
@@ -21,7 +21,7 @@
 #include "nsISupports.h"
 #include "jdefines.h"
 #include "julnstr.h"
-#include "VEvent.h"
+#include "vevent.h"
 
 //5482d0d0-4cca-11d2-924a-00805f8a7ab6
 #define NS_ILAYER_IID   \