diff --git a/apps/inm/views.py b/apps/inm/views.py
index 2a1b8085..5be1edfb 100644
--- a/apps/inm/views.py
+++ b/apps/inm/views.py
@@ -255,6 +255,7 @@ class MIOItemViewSet(CustomListModelMixin, BulkCreateModelMixin, BulkDestroyMode
         "mio__type": ["exact", "in"],
         "mio__inout_date": ["gte", "lte", "exact"],
         "material": ["exact"],
+        "material__type": ["exact"],
         "test_date": ["isnull", "exact"]
     }
     ordering = ['create_time']