diff --git a/common/birdxplorer_common/storage.py b/common/birdxplorer_common/storage.py
index 524c168..01efc06 100644
--- a/common/birdxplorer_common/storage.py
+++ b/common/birdxplorer_common/storage.py
@@ -24,7 +24,6 @@
     BinaryBool,
     NotesClassification,
     NotesHarmful,
-    NotesValidationDifficulty
 )
 from .models import XUser as XUserModel
 from .settings import GlobalSettings