diff --git a/docker-compose.yml b/docker-compose.yml
index 6d2a6d72..c8ee3c38 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -40,9 +40,9 @@ services:
     image: mariadb:10
     container_name: db
     environment:
-      MYSQL_USER: drupal
-      MYSQL_PASSWORD: drupal
-      MYSQL_DATABASE: drupal
+      MYSQL_USER: 'drupal'
+      MYSQL_PASSWORD: 'drupal'
+      MYSQL_DATABASE: 'drupal'
       MYSQL_ROOT_PASSWORD: ''
       MYSQL_ALLOW_EMPTY_PASSWORD: 'yes'
     #restart: on-failure