diff --git a/invoice.py b/invoice.py
index 3886f34..c3d0984 100644
--- a/invoice.py
+++ b/invoice.py
@@ -214,7 +214,7 @@ class Invoice(metaclass=PoolMeta):
             if invoice.sii_state:
                 invoices_sii += '\n%s: %s' % (invoice.number, invoice.sii_state)
         if invoices_sii:
-            warning_name = 'invoices_sii_report'
+            warning_name = 'invoices_sii_report_%s' % invoices_sii
             cls.raise_user_warning(warning_name, 'invoices_sii', invoices_sii)