diff --git a/docker/edge/README.md b/docker/edge/README.md
index 48747b6..c7dfc98 100644
--- a/docker/edge/README.md
+++ b/docker/edge/README.md
@@ -1,4 +1,4 @@
-EDGE device (docker-in-docker)
+# EDGE device simulator (via docker-in-docker)
 
 ```bash
 export DOCKER_HOST='127.0.0.1:22375'