diff --git a/test/CodeGen/ARM/a15.ll b/test/CodeGen/ARM/a15.ll
index 6f816c1c2c5..5094332380c 100644
--- a/test/CodeGen/ARM/a15.ll
+++ b/test/CodeGen/ARM/a15.ll
@@ -1,4 +1,4 @@
-; RUN: llc < %s  -mcpu=cortex-a15 | FileCheck %s
+; RUN: llc < %s -march=arm -mcpu=cortex-a15 | FileCheck %s
 
 ; CHECK: a
 define i32 @a(i32 %x) {