diff --git a/addons/account/models/account_payment.py b/addons/account/models/account_payment.py
index 3ba36b049a6..adca204ce3e 100644
--- a/addons/account/models/account_payment.py
+++ b/addons/account/models/account_payment.py
@@ -115,7 +115,7 @@ class account_abstract_payment(models.AbstractModel):
             'payment_type': total_amount > 0 and 'inbound' or 'outbound',
             'partner_id': False if multi else invoices[0].commercial_partner_id.id,
             'partner_type': False if multi else MAP_INVOICE_TYPE_PARTNER_TYPE[invoices[0].type],
-            'communication': ' '.join([ref for ref in invoices.mapped('reference') if ref]),
+            'communication': ' '.join([ref for ref in invoices.mapped('reference') if ref])[:2000],
             'invoice_ids': [(6, 0, invoices.ids)],
             'multi': multi,
         })