diff --git a/test/CodeGen/X86/pr9127.ll b/test/CodeGen/X86/pr9127.ll
index af08490b83d..45b0c6c7870 100644
--- a/test/CodeGen/X86/pr9127.ll
+++ b/test/CodeGen/X86/pr9127.ll
@@ -1,4 +1,4 @@
-; RUN: llc < %s | FileCheck %s
+; RUN: llc -march=x86-64 < %s | FileCheck %s
 
 define i8 @foobar(double %d, double* %x) {
 entry: