diff --git a/memory-cache.d.ts b/memory-cache.d.ts
index f9aafd0..077b33e 100644
--- a/memory-cache.d.ts
+++ b/memory-cache.d.ts
@@ -1,5 +1,5 @@
 declare module "memory-cache" {
-    export function put(key: any, value: any, time?: number, timeoutCallback?: (key: any) => void) : void;
+    export function put(key: any, value: any, time?: number, timeoutCallback?: (key: any, value: any) => void) : void;
     export function get(key: any): any;
     export function del(key: any): void;
     export function clear(): void;
@@ -10,4 +10,4 @@ declare module "memory-cache" {
     export function debug(bool: boolean): void;
     export function hits(): number;
     export function misses(): number;
-}
\ No newline at end of file
+}