`CONSTRUCT` for creating initial state is not working

[bitspook]

This is my reducer:

// reducers/query.js
let CONSTRUCT;

CONSTRUCT = () => {
    return {
        transportId: 1,
        fromDate: '2015-12-12',
        radius: 100000
    };
};

export default {
    CONSTRUCT
};

// reducers/index.js
export query from './query';

This is how I am creating the store:

initialState = {};
reducer = combineReducers(reducers);
state = reducer(initialState);
store = applyMiddleware(thunk, logger)(createStore)(reducer, state);

I was expecting to get what's returned by CONSTRUCT as state.query, but it fails with the error Uncaught Error: Action parameter value must be an object.

I think this is a bug. Please update me if I am missing something (/ doing something wrong).

[gajus]

Not relevant in redux-immutable@2.0.1.