diff --git a/roles/mas/tasks/main.json b/roles/mas/tasks/main.json
index b3598a3..30673c6 100644
--- a/roles/mas/tasks/main.json
+++ b/roles/mas/tasks/main.json
@@ -56,7 +56,7 @@
 		"become": true,
 		"become_user": "{{var_mas_user}}",
 		"ansible.builtin.template": {
-			"src": "config-main.yaml.j2",
+			"src": "config-main.json.j2",
 			"dest": "{{var_mas_directory}}/conf.d/base.yaml"
 		}
 	},