diff --git a/roles/zeitbild_backend/templates/conf.json.j2 b/roles/zeitbild_backend/templates/conf.json.j2
index 4941222..87bb2e8 100644
--- a/roles/zeitbild_backend/templates/conf.json.j2
+++ b/roles/zeitbild_backend/templates/conf.json.j2
@@ -24,10 +24,10 @@
 	"database": {
 		"kind": "postgresql",
 		"data": {
-			"host": "{{var_zeitbild_backend_database_data_postgresql_host}}"
+			"host": "{{var_zeitbild_backend_database_data_postgresql_host}}",
 			"port": "{{var_zeitbild_backend_database_data_postgresql_port | string}}",
 			"username": "{{var_zeitbild_backend_database_data_postgresql_username}}",
-			"password": "{{var_zeitbild_backend_database_data_postgresql_password}}"
+			"password": "{{var_zeitbild_backend_database_data_postgresql_password}}",
 			"schema": "{{var_zeitbild_backend_database_data_postgresql_schema}}"
 		}
 	},