diff --git a/setup/start/nginx/appconfig.ejs b/setup/start/nginx/appconfig.ejs
index b0eba249a..2febaed78 100644
--- a/setup/start/nginx/appconfig.ejs
+++ b/setup/start/nginx/appconfig.ejs
@@ -59,6 +59,7 @@ server {
             client_max_body_size 1m;
         }
 
+        # the read timeout is between successive reads and not the whole connection
         location ~ ^/api/v1/apps/.*/exec$ {
             proxy_pass   http://127.0.0.1:3000;
             proxy_read_timeout 30m;