diff --git a/openupgrade_scripts/scripts/hr/16.0.1.1/post-migration.py b/openupgrade_scripts/scripts/hr/16.0.1.1/post-migration.py
index 90061d20fc53..d67351fd445d 100644
--- a/openupgrade_scripts/scripts/hr/16.0.1.1/post-migration.py
+++ b/openupgrade_scripts/scripts/hr/16.0.1.1/post-migration.py
@@ -147,7 +147,7 @@ def create_work_contact(env):
                     "Arbitrarily, the res.partner(%s) (the first one) "
                     "is used for work_contact_id of the hr.employee(%s).",
                     employee.id,
-                    ", ".joins(matching_partner.ids),
+                    ", ".join(str(v) for v in matching_partner.ids),
                     partner.id,
                     employee.id,
                 )