diff --git a/vexflow/vexflow.d.ts b/vexflow/vexflow.d.ts
index fd41619ef..9f5a8a006 100644
--- a/vexflow/vexflow.d.ts
+++ b/vexflow/vexflow.d.ts
@@ -6,7 +6,7 @@
 //inconsistent namespace: this is a helper funtion from tables.js and should not pollute the global namespace!
 declare function sanitizeDuration(duration : string) : string;
 
-declare module Vex {
+declare namespace Vex {
 
     function L(block : string, args : any[]) : void;
     function Merge<T extends Object>(destination : T, source : Object) : T;