diff --git a/test/db_test2.cc b/test/db_test2.cc
index 49e26ab..7c52b5b 100644
--- a/test/db_test2.cc
+++ b/test/db_test2.cc
@@ -23,7 +23,7 @@ Status OpenDB(std::string dbName, DB **db) {
 void InsertData(DB *db) {
   WriteOptions writeOptions;
   int key_num = data_size / value_size;
-  srand(static_cast<unsigned int>(time(0)));
+  srand(0);
 
   for (int i = 0; i < key_num; i++) {
     int key_ = rand() % key_num+1;
@@ -39,7 +39,7 @@ void GetData(DB *db, int size = (1 << 30)) {
   int key_num = data_size / value_size;
   
   // 点查
-  srand(static_cast<unsigned int>(time(0)));
+  srand(0);
   for (int i = 0; i < 100; i++) {
     int key_ = rand() % key_num+1;
     std::string key = std::to_string(key_);