diff --git a/src/fellchensammlung/models.py b/src/fellchensammlung/models.py
index 38a5834..c151688 100644
--- a/src/fellchensammlung/models.py
+++ b/src/fellchensammlung/models.py
@@ -194,7 +194,7 @@ class RescueOrganization(models.Model):
         return AdoptionNotice.objects.filter(organization=self)
 
     @property
-    def adoption_notices_in_hierarchy(self, adoption_notices=None):
+    def adoption_notices_in_hierarchy(self):
         """
         Shows all adoption notices of this rescue organization and all child organizations.
         """
diff --git a/src/fellchensammlung/templates/fellchensammlung/details/detail-rescue-organization.html b/src/fellchensammlung/templates/fellchensammlung/details/detail-rescue-organization.html
index 815e9db..08edd5a 100644
--- a/src/fellchensammlung/templates/fellchensammlung/details/detail-rescue-organization.html
+++ b/src/fellchensammlung/templates/fellchensammlung/details/detail-rescue-organization.html
@@ -87,7 +87,7 @@
 
     <h2 class="title is-2">{% translate 'Vermittlungen der Organisation' %}</h2>
     <div class="container-cards">
-        {% if org.adoption_notices %}
+        {% if org.adoption_notices_in_hierarchy %}
             {% for adoption_notice in org.adoption_notices_in_hierarchy %}
                 {% include "fellchensammlung/partials/partial-adoption-notice-minimal.html" %}
             {% endfor %}