diff --git a/pkg/rpc/agent_redis_request_reply_test.go b/pkg/rpc/agent_redis_request_reply_test.go
index 9281e57..36d5b75 100644
--- a/pkg/rpc/agent_redis_request_reply_test.go
+++ b/pkg/rpc/agent_redis_request_reply_test.go
@@ -41,7 +41,7 @@ func TestAgent(t *testing.T) {
 		_ = AgentServe(ctx, c, "agent3", "s3")
 	}()
 	tst := AgentClient{c}
-	time.Sleep(time.Millisecond * 50)
+	time.Sleep(50 * time.Millisecond)
 	res, err := tst.Ping(ctx)
 	r.NoError(err)
 	res, err = tst.Ping(ctx)