diff --git a/openstack_dashboard/conf/nova_policy.json b/openstack_dashboard/conf/nova_policy.json
index b6b460fd75..9199fdf1a7 100644
--- a/openstack_dashboard/conf/nova_policy.json
+++ b/openstack_dashboard/conf/nova_policy.json
@@ -26,6 +26,7 @@
     "os_compute_api:os-assisted-volume-snapshots:delete": "rule:admin_api",
     "os_compute_api:os-assisted-volume-snapshots:discoverable": "@",
     "os_compute_api:os-attach-interfaces": "rule:admin_or_owner",
+    "os_compute_api:os-attach-interfaces:delete": "rule:admin_or_owner",
     "os_compute_api:os-attach-interfaces:discoverable": "@",
     "os_compute_api:os-availability-zone:list": "rule:admin_or_owner",
     "os_compute_api:os-availability-zone:discoverable": "@",
diff --git a/openstack_dashboard/dashboards/project/instances/tables.py b/openstack_dashboard/dashboards/project/instances/tables.py
index 211b9ca8da..b398fc1d50 100644
--- a/openstack_dashboard/dashboards/project/instances/tables.py
+++ b/openstack_dashboard/dashboards/project/instances/tables.py
@@ -958,13 +958,12 @@ class AttachInterface(policy.PolicyTargetMixin, tables.LinkAction):
         return urlresolvers.reverse(self.url, args=[instance_id])
 
 
-# TODO(lyj): the policy for detach interface not exists in nova.json,
-#            once it's added, it should be added here.
 class DetachInterface(policy.PolicyTargetMixin, tables.LinkAction):
     name = "detach_interface"
     verbose_name = _("Detach Interface")
     classes = ("btn-confirm", "ajax-modal")
     url = "horizon:project:instances:detach_interface"
+    policy_rules = (("compute", "os_compute_api:os-attach-interfaces:delete"),)
 
     def allowed(self, request, instance):
         if not api.base.is_service_enabled(request, 'network'):