diff --git a/step2-07/src/reducers/index.ts b/step2-07/src/reducers/index.ts
index 01da639..92a2976 100644
--- a/step2-07/src/reducers/index.ts
+++ b/step2-07/src/reducers/index.ts
@@ -1,8 +1,6 @@
 import { Store } from '../store';
 import { addTodo, remove, complete, clear } from './pureFunctions';
 
-let index = 0;
-
 export function reducer(state: Store, payload: any): Store {
   switch (payload.type) {
     case 'addTodo':