diff --git a/reactos/dll/win32/msports/classinst.c b/reactos/dll/win32/msports/classinst.c
index f433b798321..fa369b2c3a7 100644
--- a/reactos/dll/win32/msports/classinst.c
+++ b/reactos/dll/win32/msports/classinst.c
@@ -8,6 +8,11 @@
 
 #include "precomp.h"
 
+#include <wchar.h>
+
+#define NTOS_MODE_USER
+#include <ndk/cmtypes.h>
+
 typedef enum _PORT_TYPE
 {
     UnknownPort,
diff --git a/reactos/dll/win32/msports/internal.h b/reactos/dll/win32/msports/internal.h
index 8f67052f938..3bf949ecf29 100644
--- a/reactos/dll/win32/msports/internal.h
+++ b/reactos/dll/win32/msports/internal.h
@@ -6,4 +6,4 @@
  * COPYRIGHT:   Copyright 2011 Eric Kohl
  */
 
-extern HINSTANCE hInstance;
\ No newline at end of file
+extern HINSTANCE hInstance;
diff --git a/reactos/dll/win32/msports/precomp.h b/reactos/dll/win32/msports/precomp.h
index 891f14c2c2c..e9f5d9193e0 100644
--- a/reactos/dll/win32/msports/precomp.h
+++ b/reactos/dll/win32/msports/precomp.h
@@ -1,16 +1,19 @@
-#define WIN32_NO_STATUS
 #include <stdarg.h>
+
+#define WIN32_NO_STATUS
+#define _INC_WINDOWS
+#define COM_NO_WINDOWS_H
+
 #include <windef.h>
 #include <winbase.h>
 #include <winreg.h>
 #include <winuser.h>
-#include <wchar.h>
-#include <cmtypes.h>
 #include <msports.h>
 #include <setupapi.h>
 
 #include <wine/debug.h>
-WINE_DEFAULT_DEBUG_CHANNEL(msports);
 
 #include "internal.h"
 #include "resource.h"
+
+WINE_DEFAULT_DEBUG_CHANNEL(msports);