diff --git a/cmd/go-cloud-debug-agent/debuglet.go b/cmd/go-cloud-debug-agent/debuglet.go
index b5852b6f651..24c59cb7ac8 100644
--- a/cmd/go-cloud-debug-agent/debuglet.go
+++ b/cmd/go-cloud-debug-agent/debuglet.go
@@ -14,6 +14,7 @@
 
 // +build linux,go1.7
 
+// Deprecated.
 package main
 
 import (