Why Mockito @SPY and @mock doesn't work together ?

SpyAndMockFailTest

package com.bla.web.controller;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Mock;
import org.mockito.Spy;
import org.mockito.runners.MockitoJUnitRunner;

import com.bla.web.dto.FamilyAndItems;
import com.bla.web.service.FamilyServiceImpl;

import static org.mockito.BDDMockito.given;
import static org.mockito.Matchers.anyString;

import static org.fest.assertions.Assertions.assertThat;

@RunWith(MockitoJUnitRunner.class)
public class SpyAndMockFailTest {

    @Mock
    FamilyServiceImpl    familyService;

    @Spy
    FamilyController familyController = new FamilyController(familyService);

    @Test
    public void shouldGetFamilyAndItems() {
        // given
        given(familyService.getFamilyAndItems(anyString())).willReturn(null);
        // when
        FamilyAndItems familyAndItems = familyController.getFamilyAndItems("id");
        // then
        assertThat(familyAndItems).isEqualTo(null);
    }

}

Good to know indeed