diff --git a/ChangeLog b/ChangeLog
index 0eca4e37..77fd6a03 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -34,6 +34,7 @@ ver. 0.8.12 (2013/12/XX) - things-can-only-get-better
   - remove indentation of name and loglevel while logging to SYSLOG to
     resolve syslog(-ng) parsing problems. Closes Debian bug #730202.
   - added squid filter. Thanks Roman Gelfand.
+  - updated check_fail2ban to return performance data for all jails.
 
 - New Features:
 
diff --git a/THANKS b/THANKS
index e448e09e..84f96b9a 100644
--- a/THANKS
+++ b/THANKS
@@ -10,6 +10,7 @@ Adam Tkac
 Adrien Clerc
 ache
 ag4ve (Shawn)
+Alasdair D. Campbell
 Amir Caspi
 Andrey G. Grozin
 Andy Fragen
diff --git a/files/nagios/check_fail2ban b/files/nagios/check_fail2ban
index 77a63393..9bf14305 100755
--- a/files/nagios/check_fail2ban
+++ b/files/nagios/check_fail2ban
@@ -165,7 +165,7 @@ if (($critical < 0) or ($warning < 0) or ($critical < $warning)) {
 
 # Core script
 # -----------
-my ($how_many_jail,$how_many_banned,$return_print,$plugstate) = (0,0,"","OK");
+my ($how_many_jail,$how_many_banned,$return_print,$perf_print,$plugstate) = (0,0,"","","OK");
 
 
 ### Test the connection to the fail2ban server
@@ -190,6 +190,7 @@ if ($jail_specific) {
     else {
         $how_many_banned = int($current_ban_number);
         $return_print = $how_many_banned.' current banned IP(s) for the specific jail '.$jail_specific;
+        $perf_print .= "$jail_name.currentBannedIP=$current_ban_number " if ($perfdata_value);
     }
 }
 ### To analyze all the jail
@@ -214,6 +215,7 @@ else {
         else {
             print "DEBUG : the jail $jail_name has currently $current_ban_number banned IPs\n" if ($verbose_value);
             $how_many_banned += int($current_ban_number);
+            $perf_print .= "$jail_name.currentBannedIP=$current_ban_number " if ($perfdata_value);
         }
     }
     $return_print = $how_many_jail.' detected jails with '.$how_many_banned.' current banned IP(s)';
@@ -224,7 +226,7 @@ $plugstate = "CRITICAL" if ($how_many_banned >= $critical);
 $plugstate = "WARNING" if (($how_many_banned >= $warning) && ($how_many_banned < $critical));
 
 $return_print = $display." - ".$plugstate." - ".$return_print;
-$return_print .= " | currentBannedIP=$how_many_banned" if ($perfdata_value);
+$return_print .= " | $perf_print" if ($perfdata_value);
 
 print $return_print;
 exit $ERRORS{"$plugstate"};