diff --git a/src/accounting/report/reports/utils/period_choosers.py b/src/accounting/report/reports/utils/period_choosers.py
index 4e58e44..cc7c71b 100644
--- a/src/accounting/report/reports/utils/period_choosers.py
+++ b/src/accounting/report/reports/utils/period_choosers.py
@@ -20,7 +20,6 @@ This file is largely taken from the NanoParma ERP project, first written in
 2021/9/16 by imacat (imacat@nanoparma.com).
 
 """
-import typing as t
 from abc import ABC, abstractmethod
 from datetime import date