diff --git a/src/index.d.ts b/src/index.d.ts
index 0c53ad9..bc54eaf 100644
--- a/src/index.d.ts
+++ b/src/index.d.ts
@@ -1,17 +1,3 @@
-import {
-  Body as NodeBody,
-  Headers as NodeHeaders,
-  Request as NodeRequest,
-  Response as NodeResponse
-} from "node-fetch";
-
-declare namespace unfetch {
-  export type IsomorphicHeaders = Headers | NodeHeaders;
-  export type IsomorphicBody = Body | NodeBody;
-  export type IsomorphicResponse = Response | NodeResponse;
-  export type IsomorphicRequest = Request | NodeRequest
-}
-
 declare const unfetch: typeof fetch;
 
 export default unfetch;