diff --git a/src/pretix/base/forms/questions.py b/src/pretix/base/forms/questions.py
index 08e249e818..4246b9870f 100644
--- a/src/pretix/base/forms/questions.py
+++ b/src/pretix/base/forms/questions.py
@@ -690,8 +690,9 @@ class BaseQuestionsForm(forms.Form):
         if not self.all_optional:
             for q in question_cache.values():
                 answer = d.get('question_%d' % q.pk)
-                if question_is_required(q) and not answer and answer != 0:
-                    raise ValidationError({'question_%d' % q.pk: [_('This field is required')]})
+                field = self['question_%d' % q.pk]
+                if question_is_required(q) and not answer and answer != 0 and not field.errors:
+                    raise ValidationError({'question_%d' % q.pk: [_('This field is required.')]})
 
         return d