diff --git a/src/hooks/useCounter/index.tsx b/src/hooks/useCounter/index.tsx
index 3630ba1..2c6874a 100644
--- a/src/hooks/useCounter/index.tsx
+++ b/src/hooks/useCounter/index.tsx
@@ -3,13 +3,7 @@ import { useSelector, useDispatch } from 'react-redux'
 import { actions } from '../../redux/actions/counter'
 import { selectors } from '../../redux/selectors/counter'
 
-interface IUseCounter {
-  counter: number
-  handleDecrement: () => void
-  handleIncrement: () => void
-}
-
-export function useCounter (): IUseCounter {
+export function useCounter () {
   const counter = useSelector(selectors.getCounter)
   const dispatch = useDispatch()
 
diff --git a/src/redux/reducers/counter.ts b/src/redux/reducers/counter.ts
index f07228b..6ef948c 100644
--- a/src/redux/reducers/counter.ts
+++ b/src/redux/reducers/counter.ts
@@ -1,6 +1,6 @@
 import { actionTypes } from '../constants/counter'
 
-interface IAction {
+type Action = {
   type: 'COUNTER_DECREMENT' | 'COUNTER_INCREMENT'
 }
 
@@ -8,7 +8,7 @@ const INITIAL_STATE = {
   counter: 0
 }
 
-export const counterReducers = (state = INITIAL_STATE, action: IAction) => {
+export const counterReducers = (state = INITIAL_STATE, action: Action) => {
   switch (action.type) {
     case actionTypes.COUNTER_DECREMENT:
       return {