diff --git a/apps/wpmw/views.py b/apps/wpmw/views.py
index 37424820..d0df4006 100644
--- a/apps/wpmw/views.py
+++ b/apps/wpmw/views.py
@@ -21,7 +21,8 @@ class WprViewSet(CustomListModelMixin, RetrieveModelMixin, CustomGenericViewSet)
         "wm": ["exact", "isnull"],
         "material__process": ["exact"],
         "state": ["exact"],
-        "defects": ["exact"]
+        "defects": ["exact"],
+        "number": ["exact"]
     }
     ordering = ["-create_time"]
     ordering_fields = ["number", "create_time", "update_time"]