diff --git a/reactos/dll/win32/user32/include/user32p.h b/reactos/dll/win32/user32/include/user32p.h
index 8ed8fba96a9..955ae3816c9 100644
--- a/reactos/dll/win32/user32/include/user32p.h
+++ b/reactos/dll/win32/user32/include/user32p.h
@@ -41,7 +41,7 @@
   (BOOL)NtUserCallTwoParam((DWORD)hWnd, (DWORD)hRgn, TWOPARAM_ROUTINE_VALIDATERGN)
 
 #define NtUserSetWindowContextHelpId(hWnd, dwContextHelpId) \
-  (BOOL)NtUserCallTwoParam((DWORD)hwnd, dwContextHelpId, HWNDPARAM_ROUTINE_SETWNDCONTEXTHLPID)
+  (BOOL)NtUserCallHwndParam(hwnd, dwContextHelpId, HWNDPARAM_ROUTINE_SETWNDCONTEXTHLPID)
 
 #define NtUserSetCaretPos(X, Y) \
   (BOOL)NtUserCallTwoParam((DWORD)X, (DWORD)Y, TWOPARAM_ROUTINE_SETCARETPOS)