diff --git a/index.d.ts b/index.d.ts
index 88db2ef..e44ec36 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -6,7 +6,7 @@ export const toMatchFile: (
   content: string | Buffer,
   filename?: string,
   options?: FileMatcherOptions
-) => CustomMatcherResult;
+) => jest.CustomMatcherResult;
 
 declare interface FileMatcherOptions {
   diff?: DiffOptions;