diff --git a/hosting/models.py b/hosting/models.py
index d95adf13..78743edc 100644
--- a/hosting/models.py
+++ b/hosting/models.py
@@ -282,7 +282,7 @@ class UserCardDetail(AssignPermissionsMixin, models.Model):
         cu = cus_response['response_object']
         cu.default_source = stripe_source_id
         cu.save()
-        self._save_default_card(stripe_api_cus_id, stripe_source_id)
+        self.save_default_card(stripe_api_cus_id, stripe_source_id)
 
     def set_default_card_from_stripe(self, stripe_api_cus_id):
         stripe_utils = StripeUtils()
@@ -290,12 +290,15 @@ class UserCardDetail(AssignPermissionsMixin, models.Model):
         cu = cus_response['response_object']
         default_source = cu.default_source
         if default_source is not None:
-            self._save_default_card(stripe_api_cus_id, default_source)
+            self.save_default_card(stripe_api_cus_id, default_source)
 
-    def _save_default_card(self, stripe_api_cus_id, card_id):
+    def save_default_card(self, stripe_api_cus_id, card_id):
         stripe_cust = StripeCustomer.objects.get(stripe_id=stripe_api_cus_id)
         user_card_detail = UserCardDetail.objects.get(
             stripe_customer=stripe_cust, card_id=card_id
         )
+        for card in stripe_cust.usercarddetail_set.all():
+            card.preferred = False
+            card.save()
         user_card_detail.preferred = True
-        user_card_detail.save()
\ No newline at end of file
+        user_card_detail.save()