diff --git a/multiselectfield/db/fields.py b/multiselectfield/db/fields.py
index f849740..2162c49 100644
--- a/multiselectfield/db/fields.py
+++ b/multiselectfield/db/fields.py
@@ -50,6 +50,7 @@ class MultiSelectField(models.CharField):
     """ Choice values can not contain commas. """
 
     def __init__(self, *args, **kwargs):
+        self.min_choices = kwargs.pop('min_choices', None)
         self.max_choices = kwargs.pop('max_choices', None)
         super(MultiSelectField, self).__init__(*args, **kwargs)
         self.max_length = get_max_length(self.choices, self.max_length)