diff --git a/deployment/nginx/includes/canvas.conf b/deployment/nginx/includes/canvas.conf
index 9b3e040d..b82dd12d 100644
--- a/deployment/nginx/includes/canvas.conf
+++ b/deployment/nginx/includes/canvas.conf
@@ -29,6 +29,8 @@ location = / {
   if ( $query_string ) { return 403; }
   limit_req zone=captcha burst=5;
   proxy_set_header X-Real-IP $remote_addr;
+  proxy_set_header X-Forwarded-Proto $http_x_forwarded_proto;
+  proxy_set_header X-Forwarded-Host $host;
   proxy_pass http://$ppfun$request_uri;
 }