diff --git a/tests/benchmark/milvus_benchmark/runners/base.py b/tests/benchmark/milvus_benchmark/runners/base.py
index cd94a44990..712ca23047 100644
--- a/tests/benchmark/milvus_benchmark/runners/base.py
+++ b/tests/benchmark/milvus_benchmark/runners/base.py
@@ -6,7 +6,6 @@ import grpc
 import numpy as np
 
 from milvus_benchmark.env import get_env
-from milvus_benchmark import config
 from milvus_benchmark.client import MilvusClient
 from . import utils