diff --git a/htdocs/install/mysql/migration/19.0.0-20.0.0.sql b/htdocs/install/mysql/migration/19.0.0-20.0.0.sql
index 3d5f8152277..0d551e98e17 100644
--- a/htdocs/install/mysql/migration/19.0.0-20.0.0.sql
+++ b/htdocs/install/mysql/migration/19.0.0-20.0.0.sql
@@ -219,3 +219,4 @@ ALTER TABLE llx_mailing ADD COLUMN messtype	varchar(16) DEFAULT 'email' after ro
 ALTER TABLE llx_ticket ADD COLUMN model_pdf varchar(255);
 ALTER TABLE llx_ticket ADD COLUMN last_main_doc varchar(255);
 ALTER TABLE llx_ticket ADD COLUMN extraparams varchar(255);
+ALTER TABLE llx_product ADD COLUMN last_main_doc varchar(255);
diff --git a/htdocs/install/mysql/tables/llx_product.sql b/htdocs/install/mysql/tables/llx_product.sql
index 0dd84d550f5..ad7160f2dab 100644
--- a/htdocs/install/mysql/tables/llx_product.sql
+++ b/htdocs/install/mysql/tables/llx_product.sql
@@ -108,7 +108,7 @@ create table llx_product
   price_autogen                 tinyint      DEFAULT 0,
   fk_project                    integer      DEFAULT NULL,           -- Used when product was generated by a project or is specific to a project
   mandatory_period              tinyint      DEFAULT 0,              -- is used to signal to the user that the start and end dates are mandatory for this type of product the fk_product_type == 1 (service) (non-blocking action)
-
+  last_main_doc                 varchar(255),
   fk_default_bom                integer      DEFAULT NULL,
   fk_default_workstation        integer      DEFAULT NULL
 )ENGINE=innodb;
diff --git a/htdocs/product/class/product.class.php b/htdocs/product/class/product.class.php
index a6252829e28..03df322f95f 100644
--- a/htdocs/product/class/product.class.php
+++ b/htdocs/product/class/product.class.php
@@ -594,6 +594,7 @@ class Product extends CommonObject
 		'localtax1_type' => array('type'=>'varchar(10)', 'label'=>'Localtax1type', 'enabled'=>'1', 'position'=>155, 'notnull'=>1, 'visible'=>-1,),
 		'localtax2_tx' => array('type'=>'double(6,3)', 'label'=>'Localtax2tx', 'enabled'=>'1', 'position'=>160, 'notnull'=>0, 'visible'=>-1,),
 		'localtax2_type' => array('type'=>'varchar(10)', 'label'=>'Localtax2type', 'enabled'=>'1', 'position'=>165, 'notnull'=>1, 'visible'=>-1,),
+		'last_main_doc' => array('type'=>'varchar(255)', 'label'=>'LastMainDoc', 'enabled'=>1, 'visible'=>-1, 'position'=>170),
 		'import_key'    =>array('type'=>'varchar(14)', 'label'=>'ImportId', 'enabled'=>1, 'visible'=>-2, 'notnull'=>-1, 'index'=>0, 'position'=>1000),
 		//'tosell'       =>array('type'=>'integer',      'label'=>'Status',           'enabled'=>1, 'visible'=>1,  'notnull'=>1, 'default'=>0, 'index'=>1,  'position'=>1000, 'arrayofkeyval'=>array(0=>'Draft', 1=>'Active', -1=>'Cancel')),
 		//'tobuy'        =>array('type'=>'integer',      'label'=>'Status',           'enabled'=>1, 'visible'=>1,  'notnull'=>1, 'default'=>0, 'index'=>1,  'position'=>1000, 'arrayofkeyval'=>array(0=>'Draft', 1=>'Active', -1=>'Cancel')),
@@ -2538,7 +2539,7 @@ class Product extends CommonObject
 		$sql = "SELECT p.rowid, p.ref, p.ref_ext, p.label, p.description, p.url, p.note_public, p.note as note_private, p.customcode, p.fk_country, p.fk_state, p.lifetime, p.qc_frequency, p.price, p.price_ttc,";
 		$sql .= " p.price_min, p.price_min_ttc, p.price_base_type, p.cost_price, p.default_vat_code, p.tva_tx, p.recuperableonly as tva_npr, p.localtax1_tx, p.localtax2_tx, p.localtax1_type, p.localtax2_type, p.tosell,";
 		$sql .= " p.tobuy, p.fk_product_type, p.duration, p.fk_default_warehouse, p.fk_default_workstation, p.seuil_stock_alerte, p.canvas, p.net_measure, p.net_measure_units, p.weight, p.weight_units,";
-		$sql .= " p.length, p.length_units, p.width, p.width_units, p.height, p.height_units,";
+		$sql .= " p.length, p.length_units, p.width, p.width_units, p.height, p.height_units, p.last_main_doc,";
 		$sql .= " p.surface, p.surface_units, p.volume, p.volume_units, p.barcode, p.fk_barcode_type, p.finished, p.fk_default_bom, p.mandatory_period,";
 		if (!getDolGlobalString('MAIN_PRODUCT_PERENTITY_SHARED')) {
 			$sql .= " p.accountancy_code_buy, p.accountancy_code_buy_intra, p.accountancy_code_buy_export, p.accountancy_code_sell, p.accountancy_code_sell_intra, p.accountancy_code_sell_export,";
@@ -2714,6 +2715,7 @@ class Product extends CommonObject
 				$this->fk_unit = $obj->fk_unit;
 				$this->price_autogen = $obj->price_autogen;
 				$this->model_pdf = $obj->model_pdf;
+				$this->last_main_doc = $obj->last_main_doc;
 
 				$this->mandatory_period = $obj->mandatory_period;