diff --git a/apps/wpm/views.py b/apps/wpm/views.py
index d0d41f3a..86ec8601 100644
--- a/apps/wpm/views.py
+++ b/apps/wpm/views.py
@@ -134,7 +134,7 @@ class WMaterialViewSet(ListModelMixin, CustomGenericViewSet):
     perms_map = {'get': '*'}
     queryset = WMaterial.objects.filter(count__gt=0)
     serializer_class = WMaterialSerializer
-    select_related_fields = ['material', 'belong_dept', 'material__process__name', 'supplier']
+    select_related_fields = ['material', 'belong_dept', 'material__process', 'supplier']
     search_fields = ['material__name',
                     'material__number', 'material__specification', 'batch', 'material__model', "defect__name", "notok_sign", 'material_ofrom']
     filterset_class = WMaterialFilter