diff --git a/test/FrontendC/cstring-align.c b/test/FrontendC/cstring-align.c
index 80f97f8c9a1..2e3fc8b4e47 100644
--- a/test/FrontendC/cstring-align.c
+++ b/test/FrontendC/cstring-align.c
@@ -1,5 +1,5 @@
 // RUN: %llvmgcc %s -c -Os -m32 -emit-llvm -o - | llc -march=x86 -mtriple=i386-apple-darwin10 | FileCheck %s -check-prefix=DARWIN32
-// RUN: %llvmgcc %s -c -Os -m64 -emit-llvm -o - | llc -march=x86_64 -mtriple=x86_64-apple-darwin10 | FileCheck %s -check-prefix=DARWIN64
+// RUN: %llvmgcc %s -c -Os -m64 -emit-llvm -o - | llc -march=x86-64 -mtriple=x86_64-apple-darwin10 | FileCheck %s -check-prefix=DARWIN64
 
 extern void func(const char *, const char *);