diff --git a/test/CodeGen/nobuiltin.c b/test/CodeGen/nobuiltin.c
index 5a2bf1ef61..0a8e8bb4b6 100644
--- a/test/CodeGen/nobuiltin.c
+++ b/test/CodeGen/nobuiltin.c
@@ -1,7 +1,8 @@
 // RUN: %clang_cc1 -fno-builtin -O1 -S -o - %s | FileCheck %s
 
-void fn() {
+void PR13497() {
   char content[2];
+  // make sure we don't optimize this call to strcpy()
   // CHECK: __strcpy_chk
   __builtin___strcpy_chk(content, "", 1);
 }