diff --git a/check_mail_eklig.sh b/check_mail_eklig.sh
index 7339973..8ad6b6e 100755
--- a/check_mail_eklig.sh
+++ b/check_mail_eklig.sh
@@ -18,7 +18,7 @@ fi
 
 echo $cur_num > $PERSISTENCE_FILE
 
-performance="mails:$cur_num"
+performance="mails=$cur_num"
 
 echo "$STATUS |$performance"
 exit $EXITCODE