diff --git a/c3/index.d.ts b/c3/index.d.ts
index 37de6c12e2..90b670c73c 100644
--- a/c3/index.d.ts
+++ b/c3/index.d.ts
@@ -5,6 +5,9 @@
 
 /// <reference types="d3"/>
 
+export = c3;
+export as namespace c3;
+
 declare namespace c3 {
 
     type PrimitiveArray = Array<string | boolean | number>;