Mocking a function call using Mockito throw up InvalidUseOfMatchersException

I am trying to use Mockito to mock a function call.

I have a method runQueryForDataWindow in a class called QueryBuilder. The method runQueryForDataWindow takes two arguments - 1) a string 2) an instance of class FetchWindow

runQueryForDataWindow(String str, FetchWindow fetchWindow)

Here is how my test case for mocking looks like

final QueryBuilder queryBuilder = mock(QueryBuilder.class);

Mockito.when(queryBuilder.runQueryForDataWindow(anyString(), 
            any(FetchWindow.class))).thenReturn(queryResult);

I want to return queryResult irrespective of the function arguments.

When I ran this, the test fails with org.mockito.exceptions.misusing.InvalidUseOfMatchersException

I guess there is something wrong with the way I am trying to pass in the instance of FetchWindow. Appreciate any leads here.