diff --git a/test/CFrontend/2006-01-13-Includes.c b/test/CFrontend/2006-01-13-Includes.c
index c794a230e7e..b7fd750c29e 100644
--- a/test/CFrontend/2006-01-13-Includes.c
+++ b/test/CFrontend/2006-01-13-Includes.c
@@ -1,4 +1,5 @@
 // RUN: %llvmgcc %s -g -S -o - | gccas | llvm-dis | grep "test/Regression/CFrontend"
+// PR676
 
 #include <stdio.h>