diff --git a/reactos/lib/d3d8thk/win32k.S b/reactos/lib/d3d8thk/win32k.S
index f6b4d9078db..3d91e68c619 100644
--- a/reactos/lib/d3d8thk/win32k.S
+++ b/reactos/lib/d3d8thk/win32k.S
@@ -1 +1 @@
-#include "../gdi32/misc/win32k.c"
+#include "../gdi32/misc/win32k.S"