diff --git a/apps/pm/views.py b/apps/pm/views.py
index 8811ac96..efba844f 100644
--- a/apps/pm/views.py
+++ b/apps/pm/views.py
@@ -121,7 +121,7 @@ class MtaskViewSet(CustomModelViewSet):
     filterset_class = MtaskFilter
     select_related_fields = ['material_in', 'material_out', 'mgroup']
     prefetch_related_fields = ['mlog_mtask']
-    ordering_fields = ['start_date', 'mgroup__process__sort']
+    ordering_fields = ['start_date', 'mgroup__process__sort', 'create_time']
     ordering = ['-start_date', 'mgroup__process__sort', '-create_time']
 
     @action(methods=['post'], detail=False, perms_map={'post': '*'}, serializer_class=MtaskDaySerializer)