diff --git a/gestion/gen_confs/switch_conf.tpl b/gestion/gen_confs/switch_conf.tpl
index 96e5400e..bef331d9 100644
--- a/gestion/gen_confs/switch_conf.tpl
+++ b/gestion/gen_confs/switch_conf.tpl
@@ -74,8 +74,6 @@ no stack
 ;--- DHCP Snooping ---
 {%- if dhcp_snooping_vlan_names %}
 dhcp-snooping vlan{% for n in dhcp_snooping_vlan_names %} {{ n|vlan_id }}{% endfor %}
-dhcp-snooping trust {{ trusted }}
-no dhcp-snooping trust {{ non_trusted }}
 {%- for s in dhcp_servers %}
 dhcp-snooping authorized-server {{ s }}
 {%- endfor %}
@@ -95,6 +93,9 @@ interface {{ port|int }}
    enable
    name "{{ port }}"
    {{ port.flowcontrol() }}
+   {%- if port.is_trusted() %}
+   dhcp-snooping trust
+   {%- endif %}
    {%- if gigabit %}
    {{ port.speed() }}
    {%- endif %}