diff --git a/include/sql/patch/upgrade171.sql b/include/sql/patch/upgrade171.sql
index d3f3f69bf..9a0dbf4bd 100644
--- a/include/sql/patch/upgrade171.sql
+++ b/include/sql/patch/upgrade171.sql
@@ -1,7 +1,10 @@
 begin;
 ALTER TABLE public.parm_periode ADD p_exercice_label text NULL;
 COMMENT ON COLUMN public.parm_periode.p_exercice_label IS 'label of the exercice';
+alter table parm_periode disable trigger parm_periode_check_periode_trg;
+
 update parm_periode set p_exercice_label =p_exercice ;
+alter table parm_periode enable trigger parm_periode_check_periode_trg;
 ALTER TABLE public.parm_periode ALTER COLUMN p_exercice_label SET NOT NULL;
 
 COMMENT ON COLUMN public.parm_periode.p_start IS 'Start date of periode';
@@ -46,4 +49,4 @@ LANGUAGE plpgsql;
 
 
 insert into version (val,v_description) values (172,'Add free label for exercice');
-commit;
\ No newline at end of file
+commit;