diff --git a/source/common/src/tglobal.c b/source/common/src/tglobal.c
index ce4f2aa334..7853458a63 100644
--- a/source/common/src/tglobal.c
+++ b/source/common/src/tglobal.c
@@ -388,7 +388,7 @@ static int32_t taosAddServerCfg(SConfig *pCfg) {
   if (cfgAddInt32(pCfg, "queryRspPolicy", tsQueryRspPolicy, 0, 1, 0) != 0) return -1;
 
   tsNumOfRpcThreads = tsNumOfCores / 2;
-  tsNumOfRpcThreads = TRANGE(tsNumOfRpcThreads, 1, TSDB_MAX_RPC_THREADS);
+  tsNumOfRpcThreads = TRANGE(tsNumOfRpcThreads, 2, 4);
   if (cfgAddInt32(pCfg, "numOfRpcThreads", tsNumOfRpcThreads, 1, 1024, 0) != 0) return -1;
 
   tsNumOfCommitThreads = tsNumOfCores / 2;