diff --git a/reactos/include/reactos/win32k/ntuser.h b/reactos/include/reactos/win32k/ntuser.h
index ce31f1ac215..7f2a26d092e 100644
--- a/reactos/include/reactos/win32k/ntuser.h
+++ b/reactos/include/reactos/win32k/ntuser.h
@@ -1078,7 +1078,7 @@ NtUserCreateWindowEx(
   HINSTANCE hInstance,
   LPVOID lpParam,
   DWORD dwFlags,
-  BOOL InfoActive);
+  PVOID acbiBuffer);
 #endif
 
 HWINSTA