diff --git a/apps/wpm/filters.py b/apps/wpm/filters.py
index 5806e838..b1818d93 100644
--- a/apps/wpm/filters.py
+++ b/apps/wpm/filters.py
@@ -35,6 +35,7 @@ class WMaterialFilter(filters.FilterSet):
         model = WMaterial
         fields = {
             "material": ["exact", "in"],
+            "material__type": ["exact", "in"],
             "material__process": ["exact", "in"],
             "belong_dept": ["exact"],
             "belong_dept__name": ["exact"],