diff --git a/base/applications/mmc/precomp.h b/base/applications/mmc/precomp.h
index ad39a6ff1c9..7bc0abc0755 100644
--- a/base/applications/mmc/precomp.h
+++ b/base/applications/mmc/precomp.h
@@ -1,4 +1,3 @@
-#pragma once
 
 #include <windows.h>
 #include <commctrl.h>