diff --git a/models/res_partner.py b/models/res_partner.py
index 114d107..e4baadd 100644
--- a/models/res_partner.py
+++ b/models/res_partner.py
@@ -73,8 +73,16 @@ class ResPartner(models.Model):
                 limit=1
             )
             if not lowest_program:
+                # Fallback: pick the non-manual multi-level program with the lowest
+                # minimum_spend. We require minimum_spend > 0 to exclude programs like
+                # "Membership Direksi" that have no spend requirement (by-invitation only)
+                # and would otherwise be picked first due to minimum_spend defaulting to 0.
                 lowest_program = self.env['loyalty.program'].sudo().search(
-                    [('multi_level_membership', '=', True), ('manual_membership', '=', False)],
+                    [
+                        ('multi_level_membership', '=', True),
+                        ('manual_membership', '=', False),
+                        ('minimum_spend', '>', 0),
+                    ],
                     order='minimum_spend asc',
                     limit=1
                 )