diff --git a/webcola/webcola.d.ts b/webcola/webcola.d.ts
index ca1de5470f..ba5a4b260e 100644
--- a/webcola/webcola.d.ts
+++ b/webcola/webcola.d.ts
@@ -949,7 +949,6 @@ declare module cola {
         powerGraph: any;
     };
 }
-/// <reference path="../extern/d3.d.ts" />
 /// <reference path="layout.d.ts" />
 declare module cola {
     class D3StyleLayoutAdaptor extends Layout {