diff --git a/htdocs/install/mysql/migration/17.0.0-18.0.0.sql b/htdocs/install/mysql/migration/17.0.0-18.0.0.sql
index f12fd564831..6ae41a359dc 100644
--- a/htdocs/install/mysql/migration/17.0.0-18.0.0.sql
+++ b/htdocs/install/mysql/migration/17.0.0-18.0.0.sql
@@ -61,6 +61,8 @@ ALTER TABLE llx_socpeople CHANGE fk_prospectcontactlevel fk_prospectlevel varcha
 
 ALTER TABLE llx_facture ADD COLUMN prorata_discount	real DEFAULT NULL;
 
+ALTER TABLE llx_facture MODIFY COLUMN situation_cycle_ref integer;
+
 ALTER TABLE llx_payment_salary MODIFY COLUMN datep datetime;
 
 INSERT INTO llx_c_tva(rowid,fk_pays,code,taux,localtax1,localtax1_type,localtax2,localtax2_type,recuperableonly,note,active) values (1179, 117, 'I-28'  , 28,   0, '0',   0, '0', 0, 'IGST',      1);
diff --git a/htdocs/install/mysql/tables/llx_facture.sql b/htdocs/install/mysql/tables/llx_facture.sql
index 6e54df4eb32..e1c82e62f2d 100644
--- a/htdocs/install/mysql/tables/llx_facture.sql
+++ b/htdocs/install/mysql/tables/llx_facture.sql
@@ -90,7 +90,7 @@ create table llx_facture
 
   prorata_discount		real DEFAULT NULL,  					-- % of the prorata discount (to know how to add prorata discount lines for each vat rate in the invoice)
 
-  situation_cycle_ref smallint,  -- situation cycle reference. A key that is similar for all the serie.
+  situation_cycle_ref integer,   -- situation cycle reference. A key that is similar for all the serie.
   situation_counter   smallint,  -- situation counter. The number into the serie: 1, 2, ...
   situation_final     smallint,  -- 0 by default, 1 it if is the final invoice.