diff --git a/addon_service/authorized_account/models.py b/addon_service/authorized_account/models.py
index 4cc0d863..0c944f68 100644
--- a/addon_service/authorized_account/models.py
+++ b/addon_service/authorized_account/models.py
@@ -255,6 +255,8 @@ def initiate_oauth2_flow(self, authorized_scopes=None):
             ),
             state_nonce=oauth2_utils.generate_state_nonce(),
         )
+        # reset credentials
+        self._credentials = None
         self.save()
 
     def clean(self):
diff --git a/addon_service/authorized_account/serializers.py b/addon_service/authorized_account/serializers.py
index 99ff9b75..62e5e2d4 100644
--- a/addon_service/authorized_account/serializers.py
+++ b/addon_service/authorized_account/serializers.py
@@ -132,7 +132,6 @@ def process_and_set_auth(
         return authorized_account
 
     def update(self, instance, validated_data):
-        validated_data = self.fix_dotted_base_account(validated_data)
         # only these fields may be PATCHed:
         if "display_name" in validated_data:
             instance.display_name = validated_data["display_name"]