diff --git a/code/Model/EditableFormField/EditableMemberListField.php b/code/Model/EditableFormField/EditableMemberListField.php
index 33f0590..e7afc24 100644
--- a/code/Model/EditableFormField/EditableMemberListField.php
+++ b/code/Model/EditableFormField/EditableMemberListField.php
@@ -34,11 +34,12 @@ class EditableMemberListField extends EditableFormField
         $fields->removeByName('Default');
         $fields->removeByName('Validation');
 
+        /** @skipUpgrade */
         $fields->addFieldToTab(
             'Root.Main',
             DropdownField::create(
                 'GroupID',
-                _t('SilverStripe\\UserForms\\Model\\EditableFormField.GROUP', Group::class),
+                _t('SilverStripe\\UserForms\\Model\\EditableFormField.GROUP', 'Group'),
                 Group::get()->map()
             )->setEmptyString(' ')
         );
diff --git a/code/Model/Recipient/EmailRecipient.php b/code/Model/Recipient/EmailRecipient.php
index a2159b5..111e533 100644
--- a/code/Model/Recipient/EmailRecipient.php
+++ b/code/Model/Recipient/EmailRecipient.php
@@ -109,7 +109,8 @@ class EmailRecipient extends DataObject
     {
         $fields = parent::summaryFields();
         if (isset($fields['EmailAddress'])) {
-            $fields['EmailAddress'] = _t('SilverStripe\\UserForms\\Model\\UserDefinedForm.EMAILADDRESS', Email::class);
+            /** @skipUpgrade */
+            $fields['EmailAddress'] = _t('SilverStripe\\UserForms\\Model\\UserDefinedForm.EMAILADDRESS', 'Email');
         }
         if (isset($fields['EmailSubject'])) {
             $fields['EmailSubject'] = _t('SilverStripe\\UserForms\\Model\\UserDefinedForm.EMAILSUBJECT', 'Subject');