diff --git a/ui/src/app/form/component/fields/StringListWithDefaultField.js b/ui/src/app/form/component/fields/StringListWithDefaultField.js
index 96278a505..4457dba44 100644
--- a/ui/src/app/form/component/fields/StringListWithDefaultField.js
+++ b/ui/src/app/form/component/fields/StringListWithDefaultField.js
@@ -132,10 +132,10 @@ const StringListWithDefaultField = ({
                                     className="flex-grow-1"
                                     value={p.value}
                                     onChange={({ target: { value } }) => setValue(p, value)}></Form.Control>
-                                <Form.Control className="mx-4" name="default" type="radio"
+                                <Form.Check className="mx-4" name="default" type="radio"
                                     checked={ p.default }
                                     onChange={ () => setDefault(p) }
-                                ></Form.Control>
+                                ></Form.Check>
                                 <Button variant="text" className="text-danger" onClick={() => removeItem(p)}>
                                     <FontAwesomeIcon icon={faTrash} />
                                 </Button>
diff --git a/ui/src/app/metadata/domain/attribute/CustomAttributeDefinition.js b/ui/src/app/metadata/domain/attribute/CustomAttributeDefinition.js
index 595f0140e..308c3e14a 100644
--- a/ui/src/app/metadata/domain/attribute/CustomAttributeDefinition.js
+++ b/ui/src/app/metadata/domain/attribute/CustomAttributeDefinition.js
@@ -48,12 +48,7 @@ export const CustomAttributeDefinition = {
         },
         customAttrListDefinitions: {
             'ui:field': 'StringListWithDefaultField',
-            'ui:title': 'label.entity-attribute-list-options',
-            items: {
-                default: {
-                    'ui:widget': 'checkbox'
-                }
-            }
+            'ui:title': 'label.entity-attribute-list-options'
         }
     },