diff --git a/reactos/include/reactos/win32k/ntuser.h b/reactos/include/reactos/win32k/ntuser.h
index f07263a6f1d..bd9998c7cdf 100644
--- a/reactos/include/reactos/win32k/ntuser.h
+++ b/reactos/include/reactos/win32k/ntuser.h
@@ -943,7 +943,7 @@ UINT
 NTAPI
 NtUserGetMenuIndex(
   HMENU hMenu,
-  UINT wID);
+  HMENU hSubMenu);
 
 BOOL
 NTAPI