diff --git a/src/officehours_api/models.py b/src/officehours_api/models.py
index 3dcc1c60..339e124c 100644
--- a/src/officehours_api/models.py
+++ b/src/officehours_api/models.py
@@ -7,7 +7,7 @@
 from django.contrib.postgres.fields import ArrayField
 from django.dispatch import receiver
 from django.db.models.signals import post_save
-from django.core.validators import MaxLengthValidator, ValidationError
+from django.core.validators import MaxLengthValidator
 from safedelete.models import (
     SafeDeleteModel, SOFT_DELETE_CASCADE, HARD_DELETE,
 )