diff --git a/firefox/40-no_proxy.yml b/firefox/40-no_proxy.yml
index 477521d..bcb05be 100644
--- a/firefox/40-no_proxy.yml
+++ b/firefox/40-no_proxy.yml
@@ -16,3 +16,4 @@ no_proxy:
     - .mozilla.org
     - .net.nz
     - 192.168.1.0/24
+  help: Connections to localhost, 127.0.0.1/8 and ::1 are never proxied