diff --git a/source/api/actions/group_list.ts b/source/api/actions/group_list.ts
index c8d4cf2..3205f9c 100644
--- a/source/api/actions/group_list.ts
+++ b/source/api/actions/group_list.ts
@@ -52,20 +52,31 @@ namespace _espe.api
 							"type": "intiger",
 							"description": "ID"
 						},
-						"name": {
+						"preview": {
 							"nullable": false,
-							"type": "string",
-							"description": "Name"
-						},
-						"label": {
-							"nullable": false,
-							"type": "string",
-							"description": "Beschriftung"
+							"type": "object",
+							"properties": {
+								"name": {
+									"nullable": false,
+									"type": "string",
+									"description": "Name"
+								},
+								"label": {
+									"nullable": false,
+									"type": "string",
+									"description": "Beschriftung"
+								},
+							},
+							"additionalProperties": false,
+							"required": [
+								"name",
+								"label",
+							]
 						},
 					},
 					"required": [
 						"id",
-						"name",
+						"preview",
 					]
 				}),
 				"restriction": () => restriction_none,