diff --git a/app/imports/ui/components/tree/TreeNode.vue b/app/imports/ui/components/tree/TreeNode.vue
index 913a8954..c17b435a 100644
--- a/app/imports/ui/components/tree/TreeNode.vue
+++ b/app/imports/ui/components/tree/TreeNode.vue
@@ -100,7 +100,7 @@ export default {
     },
     group: {
       type: String,
-      required: true,
+      default: undefined,
     },
     organize: Boolean,
     children: {