diff --git a/mozilla/mailnews/db/msgdb/public/nsMsgDatabase.h b/mozilla/mailnews/db/msgdb/public/nsMsgDatabase.h
index e19afb062b6..ed2a5b5d386 100644
--- a/mozilla/mailnews/db/msgdb/public/nsMsgDatabase.h
+++ b/mozilla/mailnews/db/msgdb/public/nsMsgDatabase.h
@@ -52,7 +52,6 @@
 #include "nsIMimeConverter.h"
 #include "nsCOMPtr.h"
 #include "nsCOMArray.h"
-#include "nsHashtable.h"
 #include "pldhash.h"
 class ListContext;
 class nsMsgKeyArray;