diff --git a/resources/chaosknoten/public-reverse-proxy/nginx/nginx.conf b/resources/chaosknoten/public-reverse-proxy/nginx/nginx.conf
index b126fc305..cbefa75c4 100644
--- a/resources/chaosknoten/public-reverse-proxy/nginx/nginx.conf
+++ b/resources/chaosknoten/public-reverse-proxy/nginx/nginx.conf
@@ -18,6 +18,7 @@ stream {
     resolver 212.12.50.158 192.76.134.90;
 
     map $ssl_preread_server_name $address {
+        hostnames;
         ccchoir.de ccchoir.hosts.hamburg.ccc.de:8443;
         www.ccchoir.de ccchoir.hosts.hamburg.ccc.de:8443;
         cloud.hamburg.ccc.de cloud.hosts.hamburg.ccc.de:8443;