diff --git a/dom/events/EventNameList.h b/dom/events/EventNameList.h
index a88933070a8..9640cc8a7be 100644
--- a/dom/events/EventNameList.h
+++ b/dom/events/EventNameList.h
@@ -473,7 +473,7 @@ WINDOW_EVENT(afterprint,
              EventNameType_XUL | EventNameType_HTMLBodyOrFramesetOnly,
              eBasicEventClass)
 WINDOW_EVENT(beforeprint,
-             NS_BEFOREPRINT,
+             eBeforePrint,
              EventNameType_XUL | EventNameType_HTMLBodyOrFramesetOnly,
              eBasicEventClass)
 BEFOREUNLOAD_EVENT(beforeunload,
diff --git a/widget/EventMessageList.h b/widget/EventMessageList.h
index 462bfd999d1..3f4b911b9c7 100644
--- a/widget/EventMessageList.h
+++ b/widget/EventMessageList.h
@@ -344,7 +344,7 @@ NS_EVENT_MESSAGE(eBeforeScriptExecute,  eScriptEventFirst)
 NS_EVENT_MESSAGE(eAfterScriptExecute,   eScriptEventFirst + 1)
 
 NS_EVENT_MESSAGE(ePrintEventFirst,      4600)
-NS_EVENT_MESSAGE(NS_BEFOREPRINT,        ePrintEventFirst)
+NS_EVENT_MESSAGE(eBeforePrint,          ePrintEventFirst)
 NS_EVENT_MESSAGE(NS_AFTERPRINT,         ePrintEventFirst + 1)
 
 NS_EVENT_MESSAGE(NS_MESSAGE_EVENT_START, 4700)