diff --git a/src/vnode/main/src/vnodeMain.c b/src/vnode/main/src/vnodeMain.c
index 1211828a4714b64cdcfde160164bfa316621c756..9512cf4c6c8d7a8a0946f77254b548ead1f15d76 100644
--- a/src/vnode/main/src/vnodeMain.c
+++ b/src/vnode/main/src/vnodeMain.c
@@ -310,7 +310,7 @@ static int32_t vnodeSaveCfg(SMDCreateVnodeMsg *pVnodeCfg) {
 
 // TODO: this is a simple implement
 static int32_t vnodeReadCfg(SVnodeObj *pVnode) {
-  char option[3][16] = {0};
+  char option[5][16] = {0};
   char cfgFile[TSDB_FILENAME_LEN * 2] = {0};
   sprintf(cfgFile, "%s/vnode%d/config", tsVnodeDir, pVnode->vgId);