diff --git a/types/lib/legacy/legacy-data-mixin.d.ts b/types/lib/legacy/legacy-data-mixin.d.ts
index 91d33e9cde..785df30365 100644
--- a/types/lib/legacy/legacy-data-mixin.d.ts
+++ b/types/lib/legacy/legacy-data-mixin.d.ts
@@ -12,6 +12,7 @@
 /// <reference path="../utils/mixin.d.ts" />
 
 declare class UndefinedArgumentError {
+  constructor(message: any);
 }
 
 declare class LegacyDataMixin {