diff --git a/members/admin/activityparticipant_admin.py b/members/admin/activityparticipant_admin.py
index fb68f83e..aac9f9db 100644
--- a/members/admin/activityparticipant_admin.py
+++ b/members/admin/activityparticipant_admin.py
@@ -8,7 +8,6 @@
 from members.models import (
     Activity,
     AdminUserInformation,
-    Department,
     Union,
 )
 
@@ -22,7 +21,9 @@ class ActivityParticipantDepartmentFilter(admin.SimpleListFilter):
     def lookups(self, request, model_admin):
         return [
             (str(department.pk), str(department))
-            for department in Department.objects.all().order_by("name")
+            for department in AdminUserInformation.get_departments_admin(
+                request.user
+            ).order_by("name")
         ]
 
     def queryset(self, request, queryset):