diff --git a/htdocs/install/mysql/migration/14.0.0-15.0.0.sql b/htdocs/install/mysql/migration/14.0.0-15.0.0.sql
index efbb129e2a1..c76be4edbde 100644
--- a/htdocs/install/mysql/migration/14.0.0-15.0.0.sql
+++ b/htdocs/install/mysql/migration/14.0.0-15.0.0.sql
@@ -35,6 +35,11 @@
 -- VMYSQL4.3 ALTER TABLE llx_partnership MODIFY COLUMN date_partnership_end date NULL;
 -- VPGSQL8.2 ALTER TABLE llx_partnership ALTER COLUMN date_partnership_end DROP NOT NULL;
 
+-- VMYSQL4.3 ALTER TABLE llx_eventorganization_conferenceorboothattendee MODIFY COLUMN fk_actioncomm integer NULL;
+-- VPGSQL8.2 ALTER TABLE llx_eventorganization_conferenceorboothattendee ALTER COLUMN fk_actioncomm DROP NOT NULL;
+
+ALTER TABLE llx_eventorganization_conferenceorboothattendee ADD COLUMN fk_project integer NOT NULL;
+
 
 -- v15