Need help for React and Redux: Extract State Logic to Redux

I am working on the React and Redux challenges. On the third challenge ‘extract state logic to redux,’ I am stuck. I think my code is pretty much the same as the solution but it’s not passing the test.

const ADD = "ADD";

const addMessage = (message) => {
  return {
    type: ADD,
    message: message

const messageReducer = (action, Prestate=[]) => {
  switch(action.type) {
    case ADD:
      return [...Prestate, action.message];
      return Prestate;
const store = Redux.createStore(messageReducer);

and the tests not passed

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Hi @q109037. Welcome to FCC.
The problem is in the order of parameters to your reducer. It should be (Prestate=[], action) not (action, Prestate=[])

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Thank you so much!!!