diff --git a/src/common/src/tglobal.c b/src/common/src/tglobal.c
index c3c159ee45ae944fbb9b0efa1af0d86647a2a5b6..1524f15b7d5df38fe5f9e75d5dd88c4dd6553f0d 100644
--- a/src/common/src/tglobal.c
+++ b/src/common/src/tglobal.c
@@ -921,7 +921,7 @@ static void doInitGlobalConfig(void) {
   cfg.valType = TAOS_CFG_VTYPE_INT32;
   cfg.cfgType = TSDB_CFG_CTYPE_B_CONFIG | TSDB_CFG_CTYPE_B_CLIENT | TSDB_CFG_CTYPE_B_SHOW;
   cfg.minValue = -1;
-  cfg.maxValue = 10000000;
+  cfg.maxValue = 10000000000.0f;
   cfg.ptrLength = 0;
   cfg.unitType = TAOS_CFG_UTYPE_NONE;
   taosInitConfigOption(cfg);