diff --git a/bin/pct-rename b/bin/pct-rename
index 114b850..73ea748 100755
--- a/bin/pct-rename
+++ b/bin/pct-rename
@@ -49,8 +49,8 @@ function assert_args {
 
 function rename {
 	vmid=$(pct-lookup $OLDNAME)
-	[[ ! -f /etc/pve/lxc/$vmid.conf ]] && echo "no configuration file found for vmid=<$vmid>" && exit 20
-	/opt/miaou-bash/tools/append_or_replace '^hostname:.*$' "hostname: $NEWNAME" /etc/pve/lxc/$vmid.conf
+
+	pct set $vmid --hostname "$NEWNAME"
 }
 
 # MAIN