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 912eb7fe0eb..b5c7ec5013b 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
@@ -150,3 +150,6 @@ INSERT INTO llx_c_forme_juridique (fk_pays, code, libelle) VALUES (20, '2010', '
 INSERT INTO llx_c_forme_juridique (fk_pays, code, libelle) VALUES (20, '2011', 'Ideell förening');
 INSERT INTO llx_c_forme_juridique (fk_pays, code, libelle) VALUES (20, '2012', 'Stiftelse');
 
+
+ALTER TABLE llx_c_holiday_types ADD COLUMN block_if_negative integer NOT NULL DEFAULT 0 AFTER fk_country;
+