diff --git a/ChangeLog b/ChangeLog
index 4f16fec0..e2382a19 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -21,6 +21,10 @@ ver. 0.8.12 (2013/12/XX) - things-can-only-get-better
     465. Thanks Stefan. Closes gh-447
   - mysqld-syslog-iptables rule was too long. Part of gh-447.
 
+- Enhancements:
+  - long names on jails documented based on iptables limit of 30 less
+    len("fail2ban-").
+
 - New Features:
 
   Daniel Black
diff --git a/server/jail.py b/server/jail.py
index 5e60ec7f..7ce12e46 100644
--- a/server/jail.py
+++ b/server/jail.py
@@ -102,9 +102,11 @@ class Jail:
 		self.__filter = FilterPyinotify(self)
 	
 	def setName(self, name):
+		# 20 based on iptable chain name limit of 30 less len('fail2ban-')
 		if len(name) >= 20:
-			logSys.warning("Jail name %r might be too long and some commands "
-							"might not function correctly. Please shorten"
+			logSys.warning("Jail name %r might be too long and some commands"
+							" (e.g. iptables) might not function correctly."
+							" Please shorten"
 							% name)
 		self.__name = name