diff --git a/source/util/src/tconfig.c b/source/util/src/tconfig.c
index 27a8edc009..0253f1a80c 100644
--- a/source/util/src/tconfig.c
+++ b/source/util/src/tconfig.c
@@ -442,13 +442,6 @@ int32_t cfgCheckRangeForDynUpdate(SConfig *pCfg, const char *name, const char *p
 }
 
 static int32_t cfgAddItem(SConfig *pCfg, SConfigItem *pItem, const char *name) {
-  pItem->stype = CFG_STYPE_DEFAULT;
-  pItem->name = taosStrdup(name);
-  if (pItem->name == NULL) {
-    terrno = TSDB_CODE_OUT_OF_MEMORY;
-    return -1;
-  }
-
   int size = pCfg->array->size;
   for (int32_t i = 0; i < size; ++i) {
     SConfigItem *existItem = taosArrayGet(pCfg->array, i);
@@ -458,6 +451,13 @@ static int32_t cfgAddItem(SConfig *pCfg, SConfigItem *pItem, const char *name) {
     }
   }
 
+  pItem->stype = CFG_STYPE_DEFAULT;
+  pItem->name = taosStrdup(name);
+  if (pItem->name == NULL) {
+    terrno = TSDB_CODE_OUT_OF_MEMORY;
+    return -1;
+  }
+
   int32_t len = strlen(name);
   char    lowcaseName[CFG_NAME_MAX_LEN + 1] = {0};
   strntolower(lowcaseName, name, TMIN(CFG_NAME_MAX_LEN, len));