diff --git a/addons/project_issue/project_issue_view.xml b/addons/project_issue/project_issue_view.xml
index 9222d954001..3e90a2a43d6 100644
--- a/addons/project_issue/project_issue_view.xml
+++ b/addons/project_issue/project_issue_view.xml
@@ -65,7 +65,7 @@
                         <group>
                             <field name="user_id" 
                                 context="{'default_groups_ref': ['base.group_user', 'base.group_partner_manager', 'project.group_project_user']}"/>
-                            <field name="partner_id"  on_change="onchange_partner_id(partner_id, email_from)"/>
+                            <field name="partner_id" on_change="onchange_partner_id(partner_id)"/>
                             <field name="email_from"/>
                             <label for="project_id"/>
                             <div>