diff --git a/dags/OSV.py b/dags/OSV.py
index 348cc29..aa24c92 100644
--- a/dags/OSV.py
+++ b/dags/OSV.py
@@ -211,8 +211,8 @@ def read_data_1C(**kwargs):
                     , subkonto2
                     , organizaciya
                     , case when nomer = '' then null else nomer end nomer
-                    , case when TO_DATE(date_begin, 'DD.MM.YYYY') = '0001-01-01' then null else date_begin end date_begin
-                    , case when TO_DATE(date_end, 'DD.MM.YYYY') = '0001-01-01' then null else date_end end date_end
+                    , case when date_begin = '0001-01-01' then null else date_begin end date_begin
+                    , case when date_begin = '0001-01-01' then null else date_end end date_end
                     , inn_subkonto1 as inn_subkonto1
                     , inn_organizaciya as inn_organizaciya
                     , summa_oborot