diff --git a/inxi b/inxi
index 9233e21..3a437ea 100755
--- a/inxi
+++ b/inxi
@@ -780,7 +780,7 @@ error_handler()
 			error_message="the svn branch download url: $2\nappears to be empty currently. Make sure there is an actual svn branch version\nactive before you try this again. Check http://code.google.com/p/inxi\nto verify the branch status."
 			;;
 		13)
-			error_message="The -t option requires the following extra arguments (no spaces between letters/numbers):\nc m cm [required], for example: -t cm8 OR -t cm OR -t c9\nYou entered: $2"
+			error_message="The -t option requires the following extra arguments (no spaces between letters/numbers):\nc m cm [required], for example: -t cm8 OR -t cm OR -t c9\n(numbers: 1-20, > 5 throttled to 5 in irc clients) You entered: $2"
 			;;
 		*)	error_message="error unknown: $@"
 			set -- 99