diff --git a/config/action.d/cloudflare.conf b/config/action.d/cloudflare.conf
index 4bc90c97..aa87163c 100644
--- a/config/action.d/cloudflare.conf
+++ b/config/action.d/cloudflare.conf
@@ -9,6 +9,8 @@
 # Referenced from http://www.normyee.net/blog/2012/02/02/adding-cloudflare-support-to-fail2ban by NORM YEE
 #
 # To get your CloudFlare API Key: https://www.cloudflare.com/a/account/my-account
+#
+# CloudFlare API error codes: https://www.cloudflare.com/docs/host-api.html#s4.2
 
 [Definition]