diff --git a/reactos/dll/win32/setupapi/devinst.c b/reactos/dll/win32/setupapi/devinst.c
index a9fd83f241d..e3272b4664d 100644
--- a/reactos/dll/win32/setupapi/devinst.c
+++ b/reactos/dll/win32/setupapi/devinst.c
@@ -3560,7 +3560,7 @@ HKEY WINAPI SetupDiOpenClassRegKeyExW(
     else
     {
         ERR("Invalid Flags parameter!\n");
-        SetLastError(ERROR_INVALID_PARAMETER);
+        SetLastError(ERROR_INVALID_FLAGS);
         if (MachineName != NULL) RegCloseKey(HKLM);
         return INVALID_HANDLE_VALUE;
     }