diff --git a/include/windowsx.h b/include/windowsx.h
index 0f84622..fa27b49 100644
--- a/include/windowsx.h
+++ b/include/windowsx.h
@@ -1321,7 +1321,7 @@ extern "C" {
 
 /* void Cls_OnDisplayChange(HWND hwnd, UINT bitsPerPixel, UINT cxScreen, UINT cyScreen) */
 #define HANDLE_WM_DISPLAYCHANGE(hwnd, wParam, lParam, fn) \
-    ((fn)((hwnd), (UINT)(wParam), (UINT)LOWORD(lParam), (UINT)HIWORD(wParam)), 0L)
+    ((fn)((hwnd), (UINT)(wParam), (UINT)LOWORD(lParam), (UINT)HIWORD(lParam)), 0L)
 #define FORWARD_WM_DISPLAYCHANGE(hwnd, bitsPerPixel, cxScreen, cyScreen, fn) \
     (void)(fn)((hwnd), WM_DISPLAYCHANGE, (WPARAM)(UINT)(bitsPerPixel), (LPARAM)MAKELPARAM((UINT)(cxScreen), (UINT)(cyScreen)))