diff --git a/awx/api/generics.py b/awx/api/generics.py
index 3c1321300c..23dcce4d35 100644
--- a/awx/api/generics.py
+++ b/awx/api/generics.py
@@ -299,7 +299,7 @@ class SubListAPIView(ListAPIView, ParentMixin):
         parent = self.get_parent_object()
         self.check_parent_access(parent)
         qs = self.request.user.get_queryset(self.model).distinct()
-        sublist_qs = getattr(parent, self.relationship).distinct()
+        sublist_qs = getattrd(parent, self.relationship).distinct()
         return qs & sublist_qs
 
 class SubListCreateAPIView(SubListAPIView, ListCreateAPIView):
diff --git a/awx/api/views.py b/awx/api/views.py
index 1a1ce35346..cac06c4fd0 100644
--- a/awx/api/views.py
+++ b/awx/api/views.py
@@ -633,14 +633,14 @@ class OrganizationUsersList(SubListCreateAttachDetachAPIView):
     model = User
     serializer_class = UserSerializer
     parent_model = Organization
-    relationship = 'users'
+    relationship = 'member_role.members'
 
 class OrganizationAdminsList(SubListCreateAttachDetachAPIView):
 
     model = User
     serializer_class = UserSerializer
     parent_model = Organization
-    relationship = 'admins'
+    relationship = 'admin_role.members'
 
 class OrganizationProjectsList(SubListCreateAttachDetachAPIView):