diff --git a/apps/note/tables.py b/apps/note/tables.py
index 4d4e9608c1236126b5cce3c3490bf882fd418f11..31cefe416e92d963628b20d478ba0f9ed2e9ae93 100644
--- a/apps/note/tables.py
+++ b/apps/note/tables.py
@@ -1,5 +1,7 @@
 #!/usr/bin/env python
 import django_tables2 as tables
+from django.db.models import F
+
 from .models.transactions import Transaction