diff --git a/source/client/src/clientSmlTelnet.c b/source/client/src/clientSmlTelnet.c
index e6574d030b2998566c599069a37494300ec3bce9..84881df3f2db916aee000eb9d3d01a74459e4d4d 100644
--- a/source/client/src/clientSmlTelnet.c
+++ b/source/client/src/clientSmlTelnet.c
@@ -283,7 +283,7 @@ int32_t smlParseTelnetString(SSmlHandle *info, char *sql, char *sqlEnd, SSmlLine
   }
 
   SSmlKv kv = {.key = VALUE, .keyLen = VALUE_LEN, .value = elements->cols, .length = (size_t)elements->colsLen};
-  if (smlParseValue(&kv, &info->msgBuf)) {
+  if (smlParseValue(&kv, &info->msgBuf) == TSDB_CODE_SUCCESS) {
     kv.length = (int16_t)tDataTypes[kv.type].bytes;
   }else{
     return TSDB_CODE_TSC_INVALID_VALUE;