diff --git a/openedx_cmi5_xblock/openedx_cmi5_xblock.py b/openedx_cmi5_xblock/openedx_cmi5_xblock.py
index 1ce9827..b792201 100644
--- a/openedx_cmi5_xblock/openedx_cmi5_xblock.py
+++ b/openedx_cmi5_xblock/openedx_cmi5_xblock.py
@@ -21,7 +21,7 @@
 from webob import Response
 from xblock.completable import CompletableXBlockMixin
 from xblock.core import XBlock
-from xblock.fields import Boolean, DateTime, Dict, Float, Integer, Scope, String, List
+from xblock.fields import Boolean, DateTime, Dict, Float, Integer, List, Scope, String
 from xblock.fragment import Fragment
 
 from openedx_cmi5_xblock.utils.utility import (