diff --git a/opentech/apply/categories/blocks.py b/opentech/apply/categories/blocks.py
index b51e9e2651a1bd080a1dc29e63f96fe5a64bbccc..e0c92bb60efdcaa50081e015a7c3c4c35853e9f4 100644
--- a/opentech/apply/categories/blocks.py
+++ b/opentech/apply/categories/blocks.py
@@ -5,7 +5,7 @@ from django.utils.translation import ugettext_lazy as _
 from wagtail.wagtailcore.blocks import BooleanBlock, CharBlock, ChooserBlock, TextBlock
 from wagtail.wagtailcore.utils import resolve_model_string
 
-from opentech.apply.stream_forms.blocks import FormFieldBlock
+from opentech.apply.stream_forms.blocks import OptionalFormFieldBlock
 
 
 class ModelChooserBlock(ChooserBlock):
@@ -20,7 +20,7 @@ class ModelChooserBlock(ChooserBlock):
         return resolve_model_string(self._target_model)
 
 
-class CategoryQuestionBlock(FormFieldBlock):
+class CategoryQuestionBlock(OptionalFormFieldBlock):
     # Overwrite field label and help text so we can defer to the category
     # as required
     field_label = CharBlock(
diff --git a/opentech/apply/funds/migrations/0004_categoryblock_add_required_option.py b/opentech/apply/funds/migrations/0004_categoryblock_add_required_option.py
new file mode 100644
index 0000000000000000000000000000000000000000..edc2d6d1fe1a8d7ba9bb96e8bf35c22260273334
--- /dev/null
+++ b/opentech/apply/funds/migrations/0004_categoryblock_add_required_option.py
@@ -0,0 +1,23 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.8 on 2018-01-17 11:54
+from __future__ import unicode_literals
+
+from django.db import migrations
+import opentech.apply.categories.blocks
+import wagtail.wagtailcore.blocks
+import wagtail.wagtailcore.fields
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('funds', '0003_applicationform_category_fundpageform_option'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='applicationform',
+            name='form_fields',
+            field=wagtail.wagtailcore.fields.StreamField((('char', wagtail.wagtailcore.blocks.StructBlock((('field_label', wagtail.wagtailcore.blocks.CharBlock(label='Label')), ('help_text', wagtail.wagtailcore.blocks.TextBlock(label='Help text', required=False)), ('required', wagtail.wagtailcore.blocks.BooleanBlock(label='Required', required=False)), ('format', wagtail.wagtailcore.blocks.ChoiceBlock(choices=[('email', 'Email'), ('url', 'URL')], label='Format', required=False)), ('default_value', wagtail.wagtailcore.blocks.CharBlock(label='Default value', required=False))), group='Fields')), ('text', wagtail.wagtailcore.blocks.StructBlock((('field_label', wagtail.wagtailcore.blocks.CharBlock(label='Label')), ('help_text', wagtail.wagtailcore.blocks.TextBlock(label='Help text', required=False)), ('required', wagtail.wagtailcore.blocks.BooleanBlock(label='Required', required=False)), ('default_value', wagtail.wagtailcore.blocks.TextBlock(label='Default value', required=False))), group='Fields')), ('number', wagtail.wagtailcore.blocks.StructBlock((('field_label', wagtail.wagtailcore.blocks.CharBlock(label='Label')), ('help_text', wagtail.wagtailcore.blocks.TextBlock(label='Help text', required=False)), ('required', wagtail.wagtailcore.blocks.BooleanBlock(label='Required', required=False)), ('default_value', wagtail.wagtailcore.blocks.CharBlock(label='Default value', required=False))), group='Fields')), ('checkbox', wagtail.wagtailcore.blocks.StructBlock((('field_label', wagtail.wagtailcore.blocks.CharBlock(label='Label')), ('help_text', wagtail.wagtailcore.blocks.TextBlock(label='Help text', required=False)), ('default_value', wagtail.wagtailcore.blocks.BooleanBlock(required=False))), group='Fields')), ('radios', wagtail.wagtailcore.blocks.StructBlock((('field_label', wagtail.wagtailcore.blocks.CharBlock(label='Label')), ('help_text', wagtail.wagtailcore.blocks.TextBlock(label='Help text', required=False)), ('required', wagtail.wagtailcore.blocks.BooleanBlock(label='Required', required=False)), ('choices', wagtail.wagtailcore.blocks.ListBlock(wagtail.wagtailcore.blocks.CharBlock(label='Choice')))), group='Fields')), ('dropdown', wagtail.wagtailcore.blocks.StructBlock((('field_label', wagtail.wagtailcore.blocks.CharBlock(label='Label')), ('help_text', wagtail.wagtailcore.blocks.TextBlock(label='Help text', required=False)), ('required', wagtail.wagtailcore.blocks.BooleanBlock(label='Required', required=False)), ('choices', wagtail.wagtailcore.blocks.ListBlock(wagtail.wagtailcore.blocks.CharBlock(label='Choice')))), group='Fields')), ('checkboxes', wagtail.wagtailcore.blocks.StructBlock((('field_label', wagtail.wagtailcore.blocks.CharBlock(label='Label')), ('help_text', wagtail.wagtailcore.blocks.TextBlock(label='Help text', required=False)), ('required', wagtail.wagtailcore.blocks.BooleanBlock(label='Required', required=False)), ('checkboxes', wagtail.wagtailcore.blocks.ListBlock(wagtail.wagtailcore.blocks.CharBlock(label='Checkbox')))), group='Fields')), ('date', wagtail.wagtailcore.blocks.StructBlock((('field_label', wagtail.wagtailcore.blocks.CharBlock(label='Label')), ('help_text', wagtail.wagtailcore.blocks.TextBlock(label='Help text', required=False)), ('required', wagtail.wagtailcore.blocks.BooleanBlock(label='Required', required=False)), ('default_value', wagtail.wagtailcore.blocks.DateBlock(required=False))), group='Fields')), ('time', wagtail.wagtailcore.blocks.StructBlock((('field_label', wagtail.wagtailcore.blocks.CharBlock(label='Label')), ('help_text', wagtail.wagtailcore.blocks.TextBlock(label='Help text', required=False)), ('required', wagtail.wagtailcore.blocks.BooleanBlock(label='Required', required=False)), ('default_value', wagtail.wagtailcore.blocks.TimeBlock(required=False))), group='Fields')), ('datetime', wagtail.wagtailcore.blocks.StructBlock((('field_label', wagtail.wagtailcore.blocks.CharBlock(label='Label')), ('help_text', wagtail.wagtailcore.blocks.TextBlock(label='Help text', required=False)), ('required', wagtail.wagtailcore.blocks.BooleanBlock(label='Required', required=False)), ('default_value', wagtail.wagtailcore.blocks.DateTimeBlock(required=False))), group='Fields')), ('image', wagtail.wagtailcore.blocks.StructBlock((('field_label', wagtail.wagtailcore.blocks.CharBlock(label='Label')), ('help_text', wagtail.wagtailcore.blocks.TextBlock(label='Help text', required=False)), ('required', wagtail.wagtailcore.blocks.BooleanBlock(label='Required', required=False))), group='Fields')), ('file', wagtail.wagtailcore.blocks.StructBlock((('field_label', wagtail.wagtailcore.blocks.CharBlock(label='Label')), ('help_text', wagtail.wagtailcore.blocks.TextBlock(label='Help text', required=False)), ('required', wagtail.wagtailcore.blocks.BooleanBlock(label='Required', required=False))), group='Fields')), ('text_markup', wagtail.wagtailcore.blocks.RichTextBlock(group='Other', label='Paragraph')), ('category', wagtail.wagtailcore.blocks.StructBlock((('field_label', wagtail.wagtailcore.blocks.CharBlock(help_text='Leave blank to use the default Category label', label='Label', required=False)), ('help_text', wagtail.wagtailcore.blocks.TextBlock(label='Leave blank to use the default Category help text', required=False)), ('category', opentech.apply.categories.blocks.ModelChooserBlock('categories.Category')), ('multi', wagtail.wagtailcore.blocks.BooleanBlock(label='Multi select', required=False)), ('required', wagtail.wagtailcore.blocks.BooleanBlock(label='Required', required=False))), group='Custom')))),
+        ),
+    ]