diff --git a/reactos/dll/win32/user32/windows/menu.c b/reactos/dll/win32/user32/windows/menu.c
index 0163ef4f535..98e6fa685bd 100644
--- a/reactos/dll/win32/user32/windows/menu.c
+++ b/reactos/dll/win32/user32/windows/menu.c
@@ -4993,8 +4993,12 @@ SetMenuInfo(
 {
   ROSMENUINFO mi;
   BOOL res = FALSE;
-  if(lpcmi->cbSize != sizeof(MENUINFO))
+
+  if (!lpcmi || (lpcmi->cbSize != sizeof(MENUINFO)))
+  {
+    SetLastError(ERROR_INVALID_PARAMETER);
     return res;
+  }
 
   memcpy(&mi, lpcmi, sizeof(MENUINFO));
   return NtUserMenuInfo(hmenu, &mi, TRUE);