diff --git a/account_lock_to_date/models/res_company.py b/account_lock_to_date/models/res_company.py
index 0c9f1b14b..6adc757d1 100644
--- a/account_lock_to_date/models/res_company.py
+++ b/account_lock_to_date/models/res_company.py
@@ -91,7 +91,7 @@ class ResCompany(models.Model):
                     _(
                         "You cannot lock a period that is not finished yet. "
                         "Please make sure that the lock date for advisors is "
-                        "not set after the last day of the previous month."
+                        "set at or after the last day of the next month."
                     )
                 )