diff --git a/models/account_invoice.py b/models/account_invoice.py
index 16c9033bad0656caeb6ce5001b49d05ac5defe78..4396b6bef653a8647036fef1a7aae02e8457ee69 100755
--- a/models/account_invoice.py
+++ b/models/account_invoice.py
@@ -45,6 +45,10 @@ class ScopAccountInvoice(models.Model):
         related='partner_id.ur_id',
         store=True
     )
+    partner_member_number = fields.Char(
+        string='N° Adhérent',
+        related='partner_id.member_number',
+    )
     contribution_id = fields.Many2one(
         comodel_name='scop.contribution',
         string='Ligne de cotisation')
diff --git a/views/account_invoice.xml b/views/account_invoice.xml
index a63f1185a143f58a80bb6ae883605716365142b6..4bf583310e63172aac06a00c2ce1090d3e96d588 100644
--- a/views/account_invoice.xml
+++ b/views/account_invoice.xml
@@ -24,6 +24,9 @@
                 <xpath expr="//field[@name='partner_id']" position="attributes">
                     <attribute name="string">Adhérent</attribute>
                 </xpath>
+                <xpath expr="//field[@name='partner_id']" position="after">
+                    <field name="partner_member_number" readonly="1"/>
+                </xpath>
                 <xpath expr="//field[@name='date_invoice']" position="attributes">
                     <attribute name="string">Date de cotisation</attribute>
                 </xpath>
@@ -59,7 +62,9 @@
             <field name="mode">primary</field>
             <field name="inherit_id" ref="account.invoice_tree_with_onboarding"/>
             <field name="arch" type="xml">
-
+                <xpath expr="//field[@name='partner_id']" position="before">
+                    <field name="partner_member_number" readonly="1"/>
+                </xpath>
                 <xpath expr="//field[@name='partner_id']" position="attributes">
                     <attribute name="string">Adhérent</attribute>
                 </xpath>