diff --git a/types/mime/index.d.ts b/types/mime/index.d.ts
index 2ff497ac12..771898cf91 100644
--- a/types/mime/index.d.ts
+++ b/types/mime/index.d.ts
@@ -13,5 +13,3 @@ export interface TypeMap { [key: string]: string[]; }
 export function getType(path: string): string | null;
 export function getExtension(mime: string): string | null;
 export function define(mimes: TypeMap, force?: boolean): void;
-
-export const default_type: string;