diff --git a/tests/benchmark/milvus_benchmark/runners/locust_tasks.py b/tests/benchmark/milvus_benchmark/runners/locust_tasks.py
index e4e4a1bd43..7e75ca1009 100644
--- a/tests/benchmark/milvus_benchmark/runners/locust_tasks.py
+++ b/tests/benchmark/milvus_benchmark/runners/locust_tasks.py
@@ -1,6 +1,5 @@
 import pdb
 import random
-import time
 import logging
 import math 
 from locust import TaskSet, task