diff --git a/helpdesk/models.py b/helpdesk/models.py
index 09bd6d25..fb209e39 100644
--- a/helpdesk/models.py
+++ b/helpdesk/models.py
@@ -1213,7 +1213,7 @@ class CustomField(models.Model):
 
     label = models.CharField(
         _('Label'),
-        max_length='30',
+        max_length=30,
         help_text=_('The display label for this field'),
         )