diff --git a/product_internal_reference_generator/models/product_code_sequence.py b/product_internal_reference_generator/models/product_code_sequence.py
index 6bccd8720038..b3ff8fddb019 100644
--- a/product_internal_reference_generator/models/product_code_sequence.py
+++ b/product_internal_reference_generator/models/product_code_sequence.py
@@ -20,9 +20,9 @@ def unlink(self):
             if products:
                 raise exceptions.ValidationError(
                     _(
-                        "You can't delete %s template because there is products "
-                        "related to it. You can archive it instead."
-                        " Products: %s" % (rec.name, products.mapped("display_name"))
+                        "You can't delete %s template because there are products "
+                        "related to it. You can archive it instead.\n"
+                        "Products: '%s'" % (rec.name, ', '.join(products.mapped("display_name")))
                     )
                 )
         return super().unlink()