razor editorfor checkbox event binding

I cant bind event to @html.editorfor

I've heard it might be connected to presence of "class" attribute but I can see no connection whatsoever.

@Html.EditorFor(model => model.SameAsBaseAddress, new { @onclick = "checkboxcheck()" })

function checkboxcheck() {
    //blah...
}

When I debug with firebug and add handler manually all works fine. TextBoxFor, RadioButtonFor etc. have no problems with razor event binding.

What to do?