diff --git a/addons/account/project/project_view.xml b/addons/account/project/project_view.xml
index 70db95425b1..61a17c90969 100644
--- a/addons/account/project/project_view.xml
+++ b/addons/account/project/project_view.xml
@@ -141,11 +141,11 @@
                             </div>
                         </group>
                         <group string="Product Information">
-                            <field name="product_id"/>
+                            <field name="product_id" on_change="on_change_unit_amount(product_id, unit_amount, company_id, product_uom_id, journal_id)"/>
                             <label for="unit_amount"/>
                             <div>
-                                <field name="unit_amount" class="oe_inline"/>
-                                <field name="product_uom_id" class="oe_inline"/>
+                                <field name="unit_amount" on_change="on_change_unit_amount(product_id, unit_amount, company_id, product_uom_id)" class="oe_inline"/>
+                                <field name="product_uom_id" on_change="on_change_unit_amount(product_id, unit_amount, company_id, product_uom_id)" class="oe_inline"/>
                             </div>
                         </group>
                         <group string="General Accounting">