diff --git a/source/dnode/vnode/src/tsdb/tsdbRead.c b/source/dnode/vnode/src/tsdb/tsdbRead.c
index 7432d400e66511d898cbecefd1756b34d6e4b89d..96bce02b674476b760114099de9d93eb0a735d72 100644
--- a/source/dnode/vnode/src/tsdb/tsdbRead.c
+++ b/source/dnode/vnode/src/tsdb/tsdbRead.c
@@ -4521,6 +4521,7 @@ static void doFillNullColSMA(SBlockLoadSuppInfo* pSup, int32_t numOfRows, int32_
         SColumnDataAgg nullColAgg = {.colId = pSup->colId[j], .numOfNull = numOfRows};
         taosArrayInsert(pSup->pColAgg, i, &nullColAgg);
         i += 1;
+        size++;
       }
       j += 1;
     }