diff --git a/README.md b/README.md
index 7c27488..5e343e7 100644
--- a/README.md
+++ b/README.md
@@ -62,7 +62,7 @@ services:
     container_name: onlyoffice
     image: alehoho/oo-ce-docker-license
     ports:
-      - "80"
+      - "80:80"
 ```
 
 ### Verify