diff --git a/changes.md b/changes.md
index fb8ed8f..9920146 100644
--- a/changes.md
+++ b/changes.md
@@ -1,5 +1,9 @@
 # change log
 
+## version 0.2.1 2016-01-23
+
+* fix perfdata output for daysvalid metric
+
 ## version 0.2 2015-12-29
 
 * improve human readable output by returning both response time as well as
diff --git a/check_xmppng b/check_xmppng
index da46d7a..052db5c 100755
--- a/check_xmppng
+++ b/check_xmppng
@@ -2,7 +2,7 @@
 # -*- coding: utf-8 -*-
 #
 # Nagios compatible check for XMPP servers.
-# Copyright (C) 2015  Jan Dittberner
+# Copyright (C) 2015-2016  Jan Dittberner
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -486,7 +486,7 @@ class DaysValidContext(nagiosplugin.Context):
 
     def performance(self, metric, resource):
         if resource.checkcerts and metric.value is not None:
-            return nagiosplugin.Performance('daysvalid', metric.value, 'd')
+            return nagiosplugin.Performance('daysvalid', metric.value, '')
         return None
 
 
diff --git a/icingaexchange.yml b/icingaexchange.yml
index bee5230..4f4c926 100644
--- a/icingaexchange.yml
+++ b/icingaexchange.yml
@@ -7,6 +7,29 @@ target: Messaging
 type: Plugin
 license: gplv3
 releases:
+  - name: 0.2.1
+    description: "fixed perfdata output"
+    files:
+      -
+        name: check_xmppng
+        url: "file:///check_xmppng"
+        description: "Check command"
+        checksum: 992ee1b3209bba6ddb29b46c939b2978
+      -
+        name: COPYING
+        url: "file:///COPYING"
+        description: "GPL 3.0 license text"
+        checksum: d32239bcb673463ab874e80d47fae504
+      -
+        name: README.md
+        url: "file:///README.md"
+        description: "documentation"
+        checksum: 1e6f6632b12e4ef5fc4f02c3ea65da8a
+      -
+        name: changes.md
+        url: "file:///changes.md"
+        description: "change log"
+        checksum: a7a17e05c732e24f7b0529fb868a172f
   - name: 0.2
     description: "better human readable output"
     files: