diff --git a/README.md b/README.md
index 76d045e..b4d40e0 100644
--- a/README.md
+++ b/README.md
@@ -33,7 +33,7 @@ This is an example docker-compose.xml file handling the letsencrypt network.
 <summary>
 
 ```
-docker-compose.xml (acme-companion & nginx-proxy)
+docker-compose.yml (acme-companion & nginx-proxy)
 ```
 
 </summary>