diff --git a/helpdesk/models.py b/helpdesk/models.py
index 52df8d78..9a34a585 100644
--- a/helpdesk/models.py
+++ b/helpdesk/models.py
@@ -1107,6 +1107,8 @@ class CustomField(models.Model):
     help_text = models.TextField(
         _('Help Text'),
         help_text=_('Shown to the user when editing the ticket'),
+        blank=True,
+        null=True
         )
 
     DATA_TYPE_CHOICES = (