diff --git a/test/CodeGen/X86/tls-1.ll b/test/CodeGen/X86/tls-1.ll
index 408e5bb0c60..5f6cbe09fcf 100644
--- a/test/CodeGen/X86/tls-1.ll
+++ b/test/CodeGen/X86/tls-1.ll
@@ -1,4 +1,4 @@
-; RUN: llc < %s -march=x86-64 | FileCheck %s
+; RUN: llc < %s -mtriple x86_64-apple-darwin | FileCheck %s
 
 @a = thread_local global i32 0                    ; <i32*> [#uses=0]
 @b = thread_local global i32 0                    ; <i32*> [#uses=0]