diff --git a/golem_member_minor/golem_member.py b/golem_member_minor/golem_member.py
index 403c596..3272234 100644
--- a/golem_member_minor/golem_member.py
+++ b/golem_member_minor/golem_member.py
@@ -23,7 +23,8 @@ class GolemMember(models.Model):
     _inherit = 'golem.member'
 
     ADULT_DURATION = timedelta(days=365*18)
-    legal_guardian = fields.Many2one('res.partner', 'Legal guardian')
+    legal_guardian = fields.Many2one('res.partner', 'Legal guardian',
+                                     domain="[('is_company', '=', False)]")
     activities_participation = fields.Boolean('Activities participation?')
     is_minor = fields.Boolean('Is minor?', compute='_compute_is_minor',
                               store=True, default=False)