diff --git a/ansible/roles/synapse-admin/templates/nginx/synapse-admin.conf b/ansible/roles/synapse-admin/templates/nginx/synapse-admin.conf
index c18efd1..464a900 100644
--- a/ansible/roles/synapse-admin/templates/nginx/synapse-admin.conf
+++ b/ansible/roles/synapse-admin/templates/nginx/synapse-admin.conf
@@ -3,7 +3,7 @@ server {
     listen 443 ssl;
     listen [::]:443 ssl;
 
-    http2;
+    http2 on;
 
     ssl_certificate      /ssl/chain.crt;
     ssl_certificate_key  /ssl/certificate.keyplain;