diff --git a/plugins/postfix/postfix_mail_stats b/plugins/postfix/postfix_mail_stats
index f9e1e237..2ac2866e 100755
--- a/plugins/postfix/postfix_mail_stats
+++ b/plugins/postfix/postfix_mail_stats
@@ -36,6 +36,7 @@ fi
 if [ "$1" = "config" ]; then
 
         echo 'graph_title Postfix Mail Counter'
+        echo 'graph_category postfix'
         echo 'graph_args --base 1000 -l 0'
         echo 'graph_vlabel Hourly Messages'
         echo 'recieved.label Delivered'