diff --git a/.env.default b/.env.default
index 3a6d3f6..bdeb59f 100644
--- a/.env.default
+++ b/.env.default
@@ -17,7 +17,7 @@ WALLABAG_URL=http://localhost
 NTFY_URL=http://localhost:8017
 NTFY_BEHIND_PROXY=true
 
-# TUGTAINER
+# tugtainer
 TUGTAINER_AGENT_SECRET=CHANGE_ME!
 
 # seafile
diff --git a/00-tugtainer/docker-compose.tugtainer.yml b/00-tugtainer/docker-compose.tugtainer.yml
index 5acdc5c..d0e58ce 100644
--- a/00-tugtainer/docker-compose.tugtainer.yml
+++ b/00-tugtainer/docker-compose.tugtainer.yml
@@ -41,7 +41,7 @@ services:
     restart: unless-stopped
     environment:
       # The list of available variables is in env.example
-      AGENT_SECRET: CHANGE_ME!
+      AGENT_SECRET: ${TUGTAINER_AGENT_SECRET}
       DOCKER_HOST: tcp://socket-proxy:2375
     read_only: true
     tmpfs: