diff --git a/conf/nginx.conf b/conf/nginx.conf
index fafd3409..5390e001 100644
--- a/conf/nginx.conf
+++ b/conf/nginx.conf
@@ -31,8 +31,9 @@ server {
 
 # The secure HTTPS server.
 server {
-	listen 443 ssl http2;
-	listen [::]:443 ssl http2;
+	listen 443 ssl;
+	listen [::]:443 ssl;
+	http2 on;
 
 	server_name $HOSTNAME;