diff --git a/README.md b/README.md
index 808824b7aabcdaa8d567f3c8d62d310c81b8182f..a49babc8c53dee2038a137352345fa2804814c4b 100644
--- a/README.md
+++ b/README.md
@@ -30,7 +30,7 @@ docker-compose up -d
 And profit!
 
 ```
-docker run -e HOST=example.org nginx
+docker run -e VIRTUAL_HOST=example.org nginx
 ```
 
 ## Contributing