diff --git a/clearml/backend_api/session/apimodel.py b/clearml/backend_api/session/apimodel.py
index 2d67be9f..7319b150 100644
--- a/clearml/backend_api/session/apimodel.py
+++ b/clearml/backend_api/session/apimodel.py
@@ -2,7 +2,8 @@
 
 
 class ApiModel(DataModel):
-    """ API-related data model """
+    """API-related data model"""
+
     _service = None
     _action = None
     _version = None