diff --git a/source/client/src/clientSml.c b/source/client/src/clientSml.c
index 55d117a3c8503b6c49bb5eaa1f524a15ec0a86ff..fe1946d77db340332c9dfd0b86dc6d302523a551 100644
--- a/source/client/src/clientSml.c
+++ b/source/client/src/clientSml.c
@@ -2199,7 +2199,7 @@ static int32_t smlParseTelnetLine(SSmlHandle *info, void *data, const int len) {
   }
 
   if (info->protocol == TSDB_SML_TELNET_PROTOCOL) {
-    ret = smlParseTelnetString(info, (const char *)data, data + len, tinfo, cols);
+    ret = smlParseTelnetString(info, (const char *)data, POINTER_SHIFT(data, len), tinfo, cols);
   } else if (info->protocol == TSDB_SML_JSON_PROTOCOL) {
     ret = smlParseJSONString(info, (cJSON *)data, tinfo, cols);
   } else {