diff --git a/source/common/src/tdataformat.c b/source/common/src/tdataformat.c
index dbf616f1c6ba737e59a8473259f67f9d679b8e69..6d7c94b4a2af6293e7ebde58e39fe01fbb7c9bb1 100644
--- a/source/common/src/tdataformat.c
+++ b/source/common/src/tdataformat.c
@@ -2186,7 +2186,6 @@ int32_t tGetColData(uint8_t *pBuf, SColData *pColData) {
       n += pColData->nData;
     } else {
       pColData->nData = TYPE_BYTES[pColData->type] * pColData->nVal;
-      pColData->nData = pBuf + n;
       n += pColData->nData;
     }
   }