diff --git a/dll/win32/smdll/dllmain.c b/dll/win32/smdll/dllmain.c
index 69f25548907..604f8944d40 100644
--- a/dll/win32/smdll/dllmain.c
+++ b/dll/win32/smdll/dllmain.c
@@ -5,7 +5,7 @@
  * PURPOSE:         SM Helper Library
  */
 
-#include <windef.h>
+#include "precomp.h"
 
 BOOL WINAPI DllMainCRTStartup(HANDLE hinstDll, DWORD fdwReason, LPVOID fImpLoad)
 {