diff --git a/src/Umbraco.Web.UI.Client/src/packages/core/tree/types.ts b/src/Umbraco.Web.UI.Client/src/packages/core/tree/types.ts
index 1103202c82..ff4572d7b9 100644
--- a/src/Umbraco.Web.UI.Client/src/packages/core/tree/types.ts
+++ b/src/Umbraco.Web.UI.Client/src/packages/core/tree/types.ts
@@ -19,6 +19,7 @@ export interface UmbEntityTreeItemModel extends UmbTreeItemModelBase {
 // TODO: remove this when we have unique for everything
 export interface UmbFileSystemTreeItemModel extends UmbTreeItemModelBase {
 	path: string;
+	isFolder: boolean;
 }
 
 // Root