diff --git a/site.conf b/site.conf
index 87ca94f..b640455 100644
--- a/site.conf
+++ b/site.conf
@@ -8,7 +8,7 @@
   },
 
   prefix4 = '10.90.0.0/19',
-  prefix6 = 'fdef:f00f:1337:cafe/64',
+  prefix6 = 'fdef:f00f:1337:cafe::/64',
 
   timezone = 'CET-1CEST,M3.5.0,M10.5.0/3',
   ntp_servers = {'1.ntp.services.ffrgb','2.ntp.services.ffrgb'},