diff --git a/test/CodeGen/X86/2011-12-08-AVXISelBugs.ll b/test/CodeGen/X86/2011-12-08-AVXISelBugs.ll
index 6193133e149..26670c169ea 100644
--- a/test/CodeGen/X86/2011-12-08-AVXISelBugs.ll
+++ b/test/CodeGen/X86/2011-12-08-AVXISelBugs.ll
@@ -1,4 +1,4 @@
-; RUN: llc < %s -mcpu=corei7-avx -mattr=+avx
+; RUN: llc < %s -march=x86-64 -mcpu=corei7-avx -mattr=+avx
 ; Various missing patterns causing crashes.
 ; rdar://10538793