diff --git a/examples/simple.yml b/examples/simple.yml
index 6eff2b3..ae3507c 100644
--- a/examples/simple.yml
+++ b/examples/simple.yml
@@ -1,4 +1,8 @@
-# A simple example. See reference.yml for explanation of all options.
+# A simple example. See /usr/share/doc/docker-auth/examples/reference.yml in
+# the -doc sub-package for an explanation of all options.
+#
+# To configure Docker Registry to talk to this server, put the following in the
+# registry config file:
 #
 #  auth:
 #    token:
@@ -8,7 +12,7 @@
 #      rootcertbundle: "/path/to/server.pem"
 
 server:
-  addr: ":5001"
+  addr: "127.0.0.1:5001"
   certificate: "/path/to/server.pem"
   key: "/path/to/server.key"