diff --git a/qualtricssurvey/mixins/fragment.py b/qualtricssurvey/mixins/fragment.py
index 41a4b4f..e69bc95 100644
--- a/qualtricssurvey/mixins/fragment.py
+++ b/qualtricssurvey/mixins/fragment.py
@@ -12,7 +12,8 @@
 try:
     from web_fragments.fragment import Fragment
 except Exception:  # pylint: disable=broad-except
-    from xblock.fragment import Fragment   # For backward compatibility with quince and earlier.
+    # For backward compatibility with quince and earlier.
+    from xblock.fragment import Fragment
 
 
 class XBlockFragmentBuilderMixin: