diff --git a/roles/radvd/templates/radvd.conf.j2 b/roles/radvd/templates/radvd.conf.j2
index 3cadda5..a751dd9 100644
--- a/roles/radvd/templates/radvd.conf.j2
+++ b/roles/radvd/templates/radvd.conf.j2
@@ -7,7 +7,7 @@ interface br-{{ site_code }} {
   AdvOtherConfigFlag on;
   MaxRtrAdvInterval 200;
   AdvLinkMTU {{ mtu }};
-  prefix {{ batman_ipv6 | ipaddr('address') | ipsubnet(64) }}
+  prefix {{ batman_ipv6 | ipaddr('address') | ipsubnet(64) }} {
     AdvOnLink on;
     AdvAutonomous on;
     AdvRouterAddr on;