diff --git a/htdocs/bom/class/api_boms.class.php b/htdocs/bom/class/api_boms.class.php
index 2147f7be1ba..776bcd54b7f 100644
--- a/htdocs/bom/class/api_boms.class.php
+++ b/htdocs/bom/class/api_boms.class.php
@@ -350,7 +350,8 @@ class Boms extends DolibarrApi
 			$request_data->efficiency,
 			$request_data->position,
 			$request_data->fk_bom_child,
-			$request_data->import_key
+			$request_data->import_key,
+			$request_data->fk_unit
 		);
 
 		if ($updateRes > 0) {
@@ -395,7 +396,8 @@ class Boms extends DolibarrApi
 			$request_data->disable_stock_change,
 			$request_data->efficiency,
 			$request_data->position,
-			$request_data->import_key
+			$request_data->import_key,
+			$request_data->fk_unit
 		);
 
 		if ($updateRes > 0) {
diff --git a/htdocs/bom/class/bom.class.php b/htdocs/bom/class/bom.class.php
index 1e761324c7f..a5778a17511 100644
--- a/htdocs/bom/class/bom.class.php
+++ b/htdocs/bom/class/bom.class.php
@@ -1739,13 +1739,25 @@ class BOMLine extends CommonObjectLine
 	 * @var string description
 	 */
 	public $description;
+
+	/**
+	 * @var double qty
+	 */
 	public $qty;
 
 	/**
 	 * @var int qty frozen
 	 */
 	public $qty_frozen;
+
+	/**
+	 * @var int disable stock change
+	 */
 	public $disable_stock_change;
+
+	/**
+	 * @var double efficiency
+	 */
 	public $efficiency;
 
 	/**
@@ -1769,12 +1781,16 @@ class BOMLine extends CommonObjectLine
 	 */
 	public $unit_cost = 0;
 
-
 	/**
 	 * @var Bom     array of Bom in line
 	 */
 	public $childBom = array();
 
+	/**
+	 * @var int Service unit
+	 */
+	public $fk_unit;
+
 	/**
 	 * @var int Service Workstation
 	 */