diff --git a/types/node-fetch/index.d.ts b/types/node-fetch/index.d.ts
index df9f6a9652..a480fb00e4 100644
--- a/types/node-fetch/index.d.ts
+++ b/types/node-fetch/index.d.ts
@@ -172,6 +172,8 @@ export interface ResponseInit {
 }
 
 export type HeadersInit = Headers | string[][] | { [key: string]: string };
+// HeaderInit is exported to support backwards compatibility. See PR #34382
+export type HeaderInit = HeadersInit;
 export type BodyInit = ArrayBuffer | ArrayBufferView | NodeJS.ReadableStream | string | URLSearchParams;
 export type RequestInfo = string | Request;