diff --git a/Home.md b/Home.md
index 75701bc..6fbe268 100644
--- a/Home.md
+++ b/Home.md
@@ -16,7 +16,7 @@ See [README.md](src/master/README.md)
 Inside the container tt-rss run under ``app`` user, which is what you should specify with docker:
 
 ```sh
-docker exec -it --user app APP_CONTAINER /var/www/html/tt-rss/update.php --help
+docker exec -it --user app APP_CONTAINER_ID /var/www/html/tt-rss/update.php --help
 ```
 
 ### How do I add plugins and themes?