diff --git a/partner_changeset/models/changeset_field_rule.py b/partner_changeset/models/changeset_field_rule.py
index 1c8729419..d5edcf5cf 100644
--- a/partner_changeset/models/changeset_field_rule.py
+++ b/partner_changeset/models/changeset_field_rule.py
@@ -38,6 +38,7 @@ class ChangesetFieldRule(models.Model):
     action = fields.Selection(
         selection='_selection_action',
         string='Action',
+        required=True,
         help="Auto: always apply a change.\n"
              "Validate: manually applied by an administrator.\n"
              "Never: change never applied.",