diff --git a/headers/build/os/MailKit.h b/headers/build/os/MailKit.h
deleted file mode 100644
index bf67aba624..0000000000
--- a/headers/build/os/MailKit.h
+++ /dev/null
@@ -1,5 +0,0 @@
-/*
- * Master include file for the Mail Kit.
- *
- */
-#include <E-mail.h>