diff --git a/src/kit/taosdemo/taosdemo.c b/src/kit/taosdemo/taosdemo.c
index f327a8a5856b2df9259e6bffc6235dd618721e36..8db149a55962ead9f10204d850298c98ac6cfad6 100644
--- a/src/kit/taosdemo/taosdemo.c
+++ b/src/kit/taosdemo/taosdemo.c
@@ -5983,7 +5983,7 @@ static int32_t prepareStbStmtBind(
         int64_t startTime, int32_t recSeq,
         bool isColumn)
 {
-    char *bindBuffer = calloc(1, g_args.len_of_binary);
+    char *bindBuffer = calloc(1, DOUBLE_BUFF_LEN); // g_args.len_of_binary);
     if (bindBuffer == NULL) {
         errorPrint("%s() LN%d, Failed to allocate %d bind buffer\n",
                 __func__, __LINE__, g_args.len_of_binary);