diff --git a/runbot/templates/nginx.xml b/runbot/templates/nginx.xml
index 81afd8a2..aff41ba9 100644
--- a/runbot/templates/nginx.xml
+++ b/runbot/templates/nginx.xml
@@ -51,6 +51,9 @@ server {
     }
 }
 
+
+<t id="root_anchor"/>
+
 <t t-foreach="builds" t-as="build">
 server {
     listen 8080;
@@ -65,6 +68,7 @@ server {
       proxy_set_header Upgrade $http_upgrade;
       proxy_set_header Connection "Upgrade";
     }
+    <t id="build_anchor"/>
 }
 </t>
 server {