diff --git a/htdocs/install/mysql/migration/20.0.0-21.0.0.sql b/htdocs/install/mysql/migration/20.0.0-21.0.0.sql
index cb821e230ae..cb764363909 100644
--- a/htdocs/install/mysql/migration/20.0.0-21.0.0.sql
+++ b/htdocs/install/mysql/migration/20.0.0-21.0.0.sql
@@ -334,10 +334,10 @@ CREATE TABLE llx_accounting_category_account
 ) ENGINE=innodb;
 
 ALTER TABLE llx_accounting_category_account ADD INDEX idx_accounting_category_account_fk_accounting_category (fk_accounting_category);
-ALTER TABLE llx_accounting_category_account ADD CONSTRAINT fk_accounting_category_account_fk_accounting_category FOREIGN KEY (fk_accounting_category) REFERENCES llx_c_accounting_category (rowid);
+--ALTER TABLE llx_accounting_category_account ADD CONSTRAINT fk_accounting_category_account_fk_accounting_category FOREIGN KEY (fk_accounting_category) REFERENCES llx_c_accounting_category (rowid);
 
 ALTER TABLE llx_accounting_category_account ADD INDEX idx_accounting_category_account_fk_accounting_account (fk_accounting_account);
-ALTER TABLE llx_accounting_category_account ADD CONSTRAINT fk_accounting_category_account_fk_accounting_account FOREIGN KEY (fk_accounting_account) REFERENCES llx_accounting_account (rowid);
+--ALTER TABLE llx_accounting_category_account ADD CONSTRAINT fk_accounting_category_account_fk_accounting_account FOREIGN KEY (fk_accounting_account) REFERENCES llx_accounting_account (rowid);
 
 ALTER TABLE llx_accounting_category_account ADD UNIQUE INDEX uk_accounting_category_account(fk_accounting_category, fk_accounting_account);