diff --git a/strategy/bb_backtest.py b/strategy/bb_backtest.py
index e4f6fe4..63baf46 100644
--- a/strategy/bb_backtest.py
+++ b/strategy/bb_backtest.py
@@ -16,7 +16,6 @@ from typing import List, Optional
 import numpy as np
 import pandas as pd
 
-from .data_loader import KlineSource, load_klines
 from .indicators import bollinger