diff --git a/apps/pm/filters.py b/apps/pm/filters.py
index 373d3ab5..8ce6e260 100644
--- a/apps/pm/filters.py
+++ b/apps/pm/filters.py
@@ -55,6 +55,7 @@ class MtaskFilter(filters.FilterSet):
             "material_out__type": ["exact"],
             "material_out__is_hidden": ["exact"],
             "mgroup__belong_dept__name": ["exact"],
+            "mgroup__belong_dept": ["exact"],
             "utask": ["exact"]
         }