diff --git a/clearml/backend_interface/util.py b/clearml/backend_interface/util.py
index 8b462363..9ad8d760 100644
--- a/clearml/backend_interface/util.py
+++ b/clearml/backend_interface/util.py
@@ -63,7 +63,7 @@ def get_or_create_project(session, project_name, description=None):
 
 
 def get_queue_id(session, queue):
-    # type: ('Session', str) -> Optional[str]
+    # type: ('Session', str) -> Optional[str] # noqa: F821
     if not queue:
         return None
 
@@ -80,7 +80,6 @@ def get_queue_id(session, queue):
     return None
 
 
-
 # Hack for supporting windows
 def get_epoch_beginning_of_time(timezone_info=None):
     return datetime(1970, 1, 1).replace(tzinfo=timezone_info if timezone_info else utc_timezone)
@@ -162,4 +161,3 @@ def datetime_from_isoformat(o):
     if isinstance(o, datetime):
         return o
     return datetime.strptime(o, "%Y-%m-%dT%H:%M:%S.%f")
-
diff --git a/clearml/task.py b/clearml/task.py
index 55ba3eb7..7b49726d 100644
--- a/clearml/task.py
+++ b/clearml/task.py
@@ -25,7 +25,7 @@ import six
 from pathlib2 import Path
 
 from .backend_config.defs import get_active_config_file, get_config_file
-from .backend_api.services import tasks, projects, queues
+from .backend_api.services import tasks, projects
 from .backend_api.session.session import (
     Session, ENV_ACCESS_KEY, ENV_SECRET_KEY, ENV_HOST, ENV_WEB_HOST, ENV_FILES_HOST)
 from .backend_interface.metrics import Metrics