diff --git a/htdocs/install/mysql/migration/3.3.0-3.4.0.sql b/htdocs/install/mysql/migration/3.3.0-3.4.0.sql
index b3b109bd076..0d48fa89718 100644
--- a/htdocs/install/mysql/migration/3.3.0-3.4.0.sql
+++ b/htdocs/install/mysql/migration/3.3.0-3.4.0.sql
@@ -343,6 +343,8 @@ CREATE TABLE llx_opensurvey_user_studs (
     tms timestamp
 ) ENGINE=InnoDB;
 
+ALTER TABLE llx_opensurvey_sondage ADD COLUMN id_sondage_admin CHAR(24);
+
 ALTER TABLE llx_opensurvey_comments ADD INDEX idx_id_comment (id_comment);
 ALTER TABLE llx_opensurvey_comments ADD INDEX idx_id_sondage (id_sondage);
 ALTER TABLE llx_opensurvey_sondage ADD INDEX idx_id_sondage_admin (id_sondage_admin);