diff --git a/addons/purchase/purchase.py b/addons/purchase/purchase.py
index c52470bf3d5..709ce9b437f 100644
--- a/addons/purchase/purchase.py
+++ b/addons/purchase/purchase.py
@@ -482,7 +482,8 @@ class PurchaseOrderLine(models.Model):
                 if bom.type != 'phantom':
                     continue
                 bom_delivered[bom.id] = False
-                bom_exploded = self.env['mrp.bom']._bom_explode(bom, line.product_id, line.product_qty)[0]
+                product_uom_qty_bom = self.env['product.uom']._compute_qty_obj(line.product_uom, line.product_qty, bom.product_uom)
+                bom_exploded = self.env['mrp.bom']._bom_explode(bom, line.product_id, product_uom_qty_bom)[0]
                 for bom_line in bom_exploded:
                     qty = 0.0
                     for move in line.move_ids:
diff --git a/addons/sale_mrp/sale_mrp.py b/addons/sale_mrp/sale_mrp.py
index 41064bafdf9..48b22f53210 100644
--- a/addons/sale_mrp/sale_mrp.py
+++ b/addons/sale_mrp/sale_mrp.py
@@ -42,7 +42,8 @@ class SaleOrderLine(models.Model):
             if bom.type != 'phantom':
                 continue
             bom_delivered[bom.id] = False
-            bom_exploded = self.env['mrp.bom']._bom_explode(bom, self.product_id, self.product_uom_qty)[0]
+            product_uom_qty_bom = self.env['product.uom']._compute_qty_obj(self.product_uom, self.product_uom_qty, bom.product_uom)
+            bom_exploded = self.env['mrp.bom']._bom_explode(bom, self.product_id, product_uom_qty_bom)[0]
             for bom_line in bom_exploded:
                 qty = 0.0
                 for move in self.procurement_ids.mapped('move_ids'):