diff --git a/pinax/referrals/models.py b/pinax/referrals/models.py
index 8b54bf7..6ea0332 100644
--- a/pinax/referrals/models.py
+++ b/pinax/referrals/models.py
@@ -64,7 +64,7 @@ def save(self, *args, **kwargs):
         if not self.code:
             self.code = settings.PINAX_REFERRALS_CODE_GENERATOR_CALLBACK(Referral)
         return super().save(*args, **kwargs)
- 
+
     @classmethod
     def create(cls, redirect_to, user=None, label="", target=None):
         if target: