diff --git a/netbox/utilities/forms/fields.py b/netbox/utilities/forms/fields.py
index 3cf421213..055fc62ab 100644
--- a/netbox/utilities/forms/fields.py
+++ b/netbox/utilities/forms/fields.py
@@ -357,6 +357,10 @@ class DynamicModelChoiceField(DynamicModelChoiceMixin, forms.ModelChoiceField):
     """
 
     def clean(self, value):
+        """
+        When null option is enabled and "None" is sent as part of a form to be submitted, it is sent as the
+        string 'null'.  This will check for that condition and gracefully handle the conversion to a NoneType.
+        """
         if self.null_option is not None and value == 'null':
             return None
         return super().clean(value)