diff --git a/salt/lxc-containers/config b/salt/lxc-containers/config
index 09847ee..a145be2 100644
--- a/salt/lxc-containers/config
+++ b/salt/lxc-containers/config
@@ -14,7 +14,7 @@ lxc.kmsg = 0
 {%- for net, conf in container['interfaces'].items() %}
 lxc.network.type={{ conf['type'] }}
 lxc.network.flags=up
-lxc.network.hwaddr={{ hwaddr_prefix }}:{{ n.__str()__.rjust(2, '0') }}
+lxc.network.hwaddr={{ hwaddr_prefix }}:{{ n.__str__().rjust(2, '0') }}
 {%- if conf['type'] == 'veth' %}
 lxc.network.veth.pair={{ id }}-{{ net }}
 {%- endif %}