diff --git a/addons/account/project/project_view.xml b/addons/account/project/project_view.xml
index 70db95425b1..3d2b300f009 100644
--- a/addons/account/project/project_view.xml
+++ b/addons/account/project/project_view.xml
@@ -141,7 +141,7 @@
                             </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"/>
diff --git a/addons/project_timesheet/project_timesheet_view.xml b/addons/project_timesheet/project_timesheet_view.xml
index c7d6ab15ab4..a4e2a38a3cc 100644
--- a/addons/project_timesheet/project_timesheet_view.xml
+++ b/addons/project_timesheet/project_timesheet_view.xml
@@ -71,7 +71,7 @@
             <field name="inherit_id" ref="account.view_account_analytic_line_tree"/>
             <field name="arch" type="xml">
                 <field name="account_id"  position="replace">
-                    <field name="account_id" string="Analytic account/project"/>
+                    <field name="account_id" string="Analytic account/project" on_change="on_change_account_id(account_id)"/>
                 </field>
             </field>
         </record>