diff --git a/clang/test/SemaCXX/declspec-thread.cpp b/clang/test/SemaCXX/declspec-thread.cpp
index 954f943d9735..0ace9a65a4c5 100644
--- a/clang/test/SemaCXX/declspec-thread.cpp
+++ b/clang/test/SemaCXX/declspec-thread.cpp
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -std=c++11 -fms-extensions -verify %s
+// RUN: %clang_cc1 -triple i686-pc-win32 -std=c++11 -fms-extensions -verify %s
 
 __thread __declspec(thread) int a; // expected-error {{already has a thread-local storage specifier}}
 __declspec(thread) __thread int b; // expected-error {{already has a thread-local storage specifier}}