diff --git a/form-data/form-data.d.ts b/form-data/form-data.d.ts
index 98dc1567df..2af4565ccb 100644
--- a/form-data/form-data.d.ts
+++ b/form-data/form-data.d.ts
@@ -11,5 +11,6 @@ declare module "form-data" {
 		getHeaders(): Object;
 		// TODO expand pipe
 		pipe(to: any): any;
+		submit(params: string|Object, callback: (error: any, response: any) => void): any;
 	}
 }