diff --git a/clang/test/Driver/nostdincxx.cpp b/clang/test/Driver/nostdincxx.cpp
--- a/clang/test/Driver/nostdincxx.cpp
+++ b/clang/test/Driver/nostdincxx.cpp
@@ -1,7 +1,7 @@
 // RUN: not %clangxx -nostdinc %s 2>&1 | FileCheck %s
 // RUN: not %clangxx -nostdinc++ %s 2>&1 | FileCheck %s
 // RUN: not %clangxx -nostdlibinc %s 2>&1 | FileCheck %s
-// RUN: not %clangxx -fsyntax-only -nostdinc -nostdinc++ %s 2>&1 | FileCheck /dev/null --implicit-check-not=-Wunused-command-line-argument
+// RUN: not %clangxx -target unknown-unknown-gnu -fsyntax-only -nostdinc -nostdinc++ %s 2>&1 | FileCheck /dev/null --implicit-check-not=-Wunused-command-line-argument
 // CHECK: file not found
 #include <vector>