diff --git a/windows/defdlg.c b/windows/defdlg.c
index 133dd09..c35bf2c 100644
--- a/windows/defdlg.c
+++ b/windows/defdlg.c
@@ -5,6 +5,8 @@
  *
  */
 
+#include "windef.h"
+#include "wingdi.h"
 #include "wine/winuser16.h"
 #include "dialog.h"
 #include "win.h"