diff --git a/tests/failpoints/cases/test_import_service.rs b/tests/failpoints/cases/test_import_service.rs
index 58ac666bdac..4bebb5143d3 100644
--- a/tests/failpoints/cases/test_import_service.rs
+++ b/tests/failpoints/cases/test_import_service.rs
@@ -7,7 +7,6 @@ use std::{
 
 use file_system::calc_crc32;
 use futures::{executor::block_on, stream, SinkExt};
-use grpcio::{Result, WriteFlags};
 use grpcio::{ChannelBuilder, Environment, Result, WriteFlags};
 use kvproto::{disk_usage::DiskUsage, import_sstpb::*, tikvpb_grpc::TikvClient};
 use tempfile::{Builder, TempDir};