diff --git a/source/common/src/tglobal.c b/source/common/src/tglobal.c
index 8bb2fa3ab7..eb0059676e 100644
--- a/source/common/src/tglobal.c
+++ b/source/common/src/tglobal.c
@@ -733,7 +733,7 @@ static int32_t taosAddServerCfg(SConfig *pCfg) {
   if (cfgAddString(pCfg, "s3Accesskey", tsS3AccessKey, CFG_SCOPE_SERVER, CFG_DYN_NONE) != 0) return -1;
   if (cfgAddString(pCfg, "s3Endpoint", tsS3Endpoint, CFG_SCOPE_SERVER, CFG_DYN_NONE) != 0) return -1;
   if (cfgAddString(pCfg, "s3BucketName", tsS3BucketName, CFG_SCOPE_SERVER, CFG_DYN_NONE) != 0) return -1;
-  if (cfgAddInt32(pCfg, "s3BlockSize", tsS3BlockSize, -100, 1024 * 1024, CFG_SCOPE_SERVER, CFG_DYN_ENT_SERVER) != 0)
+  if (cfgAddInt32(pCfg, "s3BlockSize", tsS3BlockSize, 1024, 1024 * 1024, CFG_SCOPE_SERVER, CFG_DYN_ENT_SERVER) != 0)
     return -1;
   if (cfgAddInt32(pCfg, "s3BlockCacheSize", tsS3BlockCacheSize, 4, 1024 * 1024, CFG_SCOPE_SERVER, CFG_DYN_ENT_SERVER) !=
       0)