diff --git a/alws/schemas/build_schema.py b/alws/schemas/build_schema.py
index c6d0bce1..d4e22b40 100644
--- a/alws/schemas/build_schema.py
+++ b/alws/schemas/build_schema.py
@@ -380,7 +380,12 @@ async def _get_module_ref(
         response = await gitea_client.get_branch(
             f'rpms/{gitea_component_name}', git_ref
         )
-        commit_id = response['commit']['id']
+        if not response:
+            exist = False
+        else:
+            commit_id = response['commit']['id']
+    except TypeError:
+        raise
     except aiohttp.client_exceptions.ClientResponseError as e:
         if e.status == 404:
             exist = False
diff --git a/alws/schemas/platform_flavors_schema.py b/alws/schemas/platform_flavors_schema.py
index f3ef9985..d6f2c19c 100644
--- a/alws/schemas/platform_flavors_schema.py
+++ b/alws/schemas/platform_flavors_schema.py
@@ -15,7 +15,7 @@ class CreateFlavour(BaseModel):
 class UpdateFlavour(BaseModel):
     name: str
     modularity: typing.Optional[dict] = None
-    repositories: typing.Optional[typing.List[RepositoryCreate]] = None
+    repositories: typing.Optional[typing.List[RepositoryCreate]] = []
     data: typing.Optional[typing.Dict[str, typing.Any]] = None