diff --git a/src/reducers/__tests__/arrayReducer.test.js b/src/reducers/__tests__/arrayReducer.test.js
index f8f9ed2..849f8c7 100644
--- a/src/reducers/__tests__/arrayReducer.test.js
+++ b/src/reducers/__tests__/arrayReducer.test.js
@@ -40,7 +40,7 @@ describe('arrayReducer', () => {
         describe('removeAtIndex', () => {
             const { removeAtIndex } = DEFAULT_ARRAY_BEHAVIORS;
             it('should remove at index correctly', () => {
-                expect(removeAtIndex.reducer([1,2,3], undefined, undefined, 0)).toEqual([2,3]);
+                expect(removeAtIndex.reducer([1,2,3], 0)).toEqual([2,3]);
             });
             it('should return state if no index provided', () => {
                 expect(removeAtIndex.reducer([1,2,3])).toEqual([1,2,3]);
diff --git a/src/reducers/arrayReducer.js b/src/reducers/arrayReducer.js
index 45fe122..9a68392 100644
--- a/src/reducers/arrayReducer.js
+++ b/src/reducers/arrayReducer.js
@@ -45,7 +45,7 @@ import { updateAtIndex, removeAtIndex } from '../utils/arrayUtils';
 import { PROP_TYPES } from '../structure';
 
 
-function checkIndex(index: ?number, payload: any, behaviorName: string): boolean {
+function checkIndex(index: ?number, payload: any = '', behaviorName: string = ''): boolean {
     if (!isNumber(index) || index === -1) {
         console.warn(`Index not passed to ${behaviorName} for payload ${payload}.`);
         return false;
@@ -81,8 +81,8 @@ export const DEFAULT_ARRAY_BEHAVIORS: ArrayReducerBehaviorsConfig = {
         validate: false,
     },
     removeAtIndex: {
-        reducer(state, payload, initialState, index) {
-            if (!checkIndex(index, payload, 'removeAtIndex')) return state;
+        reducer(state, index) {
+            if (!checkIndex(index, '', 'removeAtIndex')) return state;
             return removeAtIndex(state, index);
         },
         validate: false,