diff --git a/test/SemaCXX/type-traits.cpp b/test/SemaCXX/type-traits.cpp
index a4ed500..96e9696 100644
--- a/test/SemaCXX/type-traits.cpp
+++ b/test/SemaCXX/type-traits.cpp
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -fsyntax-only -verify %s 
+// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -fsyntax-only -verify %s 
 #define T(b) (b) ? 1 : -1
 #define F(b) (b) ? -1 : 1