diff --git a/src/restic_compose_backup/containers_db.py b/src/restic_compose_backup/containers_db.py
index 52f77c3..fd0846a 100644
--- a/src/restic_compose_backup/containers_db.py
+++ b/src/restic_compose_backup/containers_db.py
@@ -16,8 +16,8 @@ class MariadbContainer(Container):
         """dict: get credentials for the service"""
         return {
             'host': self.hostname,
-            'username': self.get_config_env('MYSQL_USER'),
-            'password': self.get_config_env('MYSQL_PASSWORD'),
+            'username': self.get_config_env('MARIADB_USER'),
+            'password': self.get_config_env('MARIADB_PASSWORD'),
             'port': "3306",
         }