diff --git a/apps/inm/views.py b/apps/inm/views.py
index 90cb4907..ff055cf4 100644
--- a/apps/inm/views.py
+++ b/apps/inm/views.py
@@ -184,12 +184,12 @@ class MIOItemViewSet(ListModelMixin, BulkCreateModelMixin, BulkDestroyModelMixin
     queryset = MIOItem.objects.all()
     serializer_class = MIOItemSerializer
     create_serializer_class = MIOItemCreateSerializer
-    select_related_fields = ['warehouse', 'mio',
-                             'material', 'mio__type']
+    select_related_fields = ['warehouse', 'mio', 'material']
     filterset_fields = {
         "warehouse": ["exact"],
         "mio": ["exact"],
         "mio__state": ["exact"],
+        "mio__type": ["exact", "in"],
         "material": ["exact"],
         "test_date": ["isnull", "exact"]
     }