diff --git a/htdocs/install/mysql/migration/13.0.0-14.0.0.sql b/htdocs/install/mysql/migration/13.0.0-14.0.0.sql
index a01f589aa20..c10e4aa5282 100644
--- a/htdocs/install/mysql/migration/13.0.0-14.0.0.sql
+++ b/htdocs/install/mysql/migration/13.0.0-14.0.0.sql
@@ -428,6 +428,10 @@ create table llx_eventorganization_conferenceorboothattendee_extrafields
 ALTER TABLE llx_eventorganization_conferenceorboothattendee_extrafields ADD INDEX idx_conferenceorboothattendee_fk_object(fk_object);
 
 ALTER TABLE llx_c_ticket_category ADD COLUMN public integer DEFAULT 0;
+
+-- VPGSQL8.2 ALTER TABLE llx_c_ticket_category ALTER COLUMN pos TYPE INTEGER USING pos::INTEGER;
+-- VPGSQL8.2 ALTER TABLE llx_c_ticket_category ALTER COLUMN pos SET NOT NULL;
+-- VPGSQL8.2 ALTER TABLE llx_c_ticket_category ALTER COLUMN pos SET DEFAULT 0;
 ALTER TABLE llx_c_ticket_category MODIFY COLUMN pos	integer DEFAULT 0 NOT NULL;