Django-crispy-forms change radio button error rendering - django

Question

When an error is rendered for a non-radio button, I see this:
<div id="div_id_field_a" class="control-group error">
<label for="id_field_a" class="control-label ">Field A</label>
<div class="controls">
<select class="select" id="id_field_a" name="field_a">
<option value="" selected="selected"></option>
<option value="0">0</option>
<option value="1">1</option>
</select>
<span id="error_1_id_field_a" class="help-inline"><strong>Select one</strong></span>
</div>
</div>
When an error is rendered for a radio button, I see this:
<div id="div_id_field_b" class="control-group error">
<label for="id_field_b_0" class="control-label ">Field b</label>
<div class="controls">
<p id="error_1_id_field_b" class="help-block"><strong>Enter a value</strong></p>
<label class="radio"><input type="radio" name="field_b" id="id_field_b_1" value="True">Yes</label>
<label class="radio"> <input type="radio" name="field_b" id="id_field_b_2" value="False">No</label>
</div>
</div>
How can I get the error message to appear after the radio button controls, which is what happens when a combo box used? Or at least not render the error inside a p tag and instead a span tag?
Here's how I render the form:
{% load crispy_forms_tags %}
<form id='main-form'>
{% csrf_token %}
{% crispy form form.helper %}
</form>
and the form:
class MyForm(ReoBaseForm):
field_b = forms.ChoiceField(required=False, choices=((True, 'Yes'), (False, 'No')),
label='Field b', widget=forms.RadioSelect())
def __init__(self, *args, **kwargs):
super(MyForm, self).__init__(*args, **kwargs)
self.helper = FormHelper()
self.helper.form_tag = False