diff --git a/examples/docker-compose-simple.yml b/examples/docker-compose-simple.yml
index afb7a35f..f9b0ba40 100644
--- a/examples/docker-compose-simple.yml
+++ b/examples/docker-compose-simple.yml
@@ -9,4 +9,4 @@ services:
       EULA: "TRUE"
     volumes:
       # attach the relative directory 'data' to the container's /data path
-      ./data:/data
+      - ./data:/data