diff --git a/src/client/src/tscParseInsert.c b/src/client/src/tscParseInsert.c
index ac34d26d2fe747773a550dd76ac7e967a592199e..5e65126ef60c7db45ba33ca70fb4687c425c7571 100644
--- a/src/client/src/tscParseInsert.c
+++ b/src/client/src/tscParseInsert.c
@@ -702,7 +702,7 @@ static int32_t doParseInsertStatement(SSqlObj *pSql, void *pTableList, char **st
   }
 
   int32_t code = TSDB_CODE_TSC_INVALID_SQL;
-  char *  tmpTokenBuf = calloc(1, 4096);  // used for deleting Escape character: \\, \', \"
+  char *  tmpTokenBuf = calloc(1, 16*1024);  // used for deleting Escape character: \\, \', \"
   if (NULL == tmpTokenBuf) {
     return TSDB_CODE_TSC_OUT_OF_MEMORY;
   }