diff --git a/docker-compose.yml b/docker-compose.yml
index 25fa4b8..2bd403c 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -10,9 +10,10 @@ services:
       - '8883:8883'
     environment:
       - TZ= Europe/Lisbon
-      - MOSQUITTO_CONFIG_CONTENT= >
-            listener 1883 
-            allow_anonymous true 
+      - |
+        MOSQUITTO_CONFIG_CONTENT= 
+        listener 1883 
+        allow_anonymous true 
     volumes:
       - data:/mosquitto/data
     restart: unless-stopped