diff --git a/htdocs/install/mysql/migration/3.6.0-3.7.0.sql b/htdocs/install/mysql/migration/3.6.0-3.7.0.sql
index 778b3f2b9ff3bed97543c51b80f65457b0f989c8..f892976595680a41fbbb62d42d72d21739d0172d 100644
--- a/htdocs/install/mysql/migration/3.6.0-3.7.0.sql
+++ b/htdocs/install/mysql/migration/3.6.0-3.7.0.sql
@@ -74,7 +74,7 @@ ALTER TABLE llx_c_paiement ADD COLUMN accountancy_code varchar(32) DEFAULT NULL
 ALTER TABLE llx_bank_account ADD COLUMN accountancy_journal varchar(3) DEFAULT NULL AFTER account_number;
 
 ALTER TABLE llx_accountingaccount add column entity integer DEFAULT 1 NOT NULL AFTER rowid;
-ALTER TABLE llx_accountingaccount add column datec datetime NOT NULL AFTER entity;
+ALTER TABLE llx_accountingaccount add column datec datetime AFTER entity;
 ALTER TABLE llx_accountingaccount add column tms timestamp AFTER datec;
 ALTER TABLE llx_accountingaccount add column fk_user_author integer DEFAULT NULL AFTER label;
 ALTER TABLE llx_accountingaccount add column fk_user_modif integer DEFAULT NULL AFTER fk_user_author;