diff --git a/dags/OSV.py b/dags/OSV.py
index 310a9c6..7bb0e9e 100644
--- a/dags/OSV.py
+++ b/dags/OSV.py
@@ -115,9 +115,9 @@ def read_data_1C(**kwargs):
                 , subkonto2
                 , organizaciya
                 , kontagent
-                , nomer
-                , date_bedin
-                , date_end
+                , case when nomer = '' then null else nomer end nomer
+                , case when TO_DATE(date_bedin, 'DD.MM.YYYY') = '0001-01-01' then null else osv.date_end end date_bedin
+                , case when TO_DATE(date_end, 'DD.MM.YYYY') = '0001-01-01' then null else osv.date_end end date_end
                 , summa_oborot
                 , summa_oborot_dt
                 , summa_oborot_kt