diff --git a/src/common/src/tdataformat.c b/src/common/src/tdataformat.c
index 5d1052d4fdd1facf898762ef23a8f25ff2d36063..6061b842094c085a5b46ad35db6d4d5aee3810df 100644
--- a/src/common/src/tdataformat.c
+++ b/src/common/src/tdataformat.c
@@ -780,7 +780,7 @@ void tdResetKVRowBuilder(SKVRowBuilder *pBuilder) {
 }
 
 SKVRow tdGetKVRowFromBuilder(SKVRowBuilder *pBuilder) {
-  uint16_t tlen = sizeof(SColIdx) * pBuilder->nCols + pBuilder->size;
+  int tlen = sizeof(SColIdx) * pBuilder->nCols + pBuilder->size;
   if (tlen == 0) return NULL;
 
   tlen += TD_KV_ROW_HEAD_SIZE;