diff --git a/addons/stock/views/stock_production_lot_views.xml b/addons/stock/views/stock_production_lot_views.xml
index 0f6a934832b..98347b3beef 100644
--- a/addons/stock/views/stock_production_lot_views.xml
+++ b/addons/stock/views/stock_production_lot_views.xml
@@ -28,7 +28,7 @@
                             <label for="product_qty"/>
                             <div class="o_row">
                                 <field name="product_qty"/>
-                                <field name="product_uom_id" groups="product.group_uom"/>
+                                <field name="product_uom_id" readonly="1" groups="product.group_uom"/>
                             </div>
                         <field name="ref"/>
                     </group>