diff --git a/apps/inm/filters.py b/apps/inm/filters.py
index 41dd53a6..977fcc1e 100644
--- a/apps/inm/filters.py
+++ b/apps/inm/filters.py
@@ -39,6 +39,7 @@ class MioFilter(filters.FilterSet):
             "mgroup": ["exact"],
             "item_mio__batch": ["exact"],
             "inout_date": ["gte", "lte", "exact"],
+            "belong_dept": ["exact"]
         }
 
     def filter_materials__type(self, queryset, name, value):