diff --git a/hb_server/apps/wpm/views.py b/hb_server/apps/wpm/views.py
index 630baba..9c8b2aa 100644
--- a/hb_server/apps/wpm/views.py
+++ b/hb_server/apps/wpm/views.py
@@ -399,7 +399,7 @@ class WProductViewSet(ListModelMixin, RetrieveModelMixin, GenericViewSet):
         军检
         """
         obj = self.get_object()
-        if obj.is_mtestok is None:
+        if obj.is_mtestok is not None:
             raise exceptions.APIException('已进行军检')
         if obj.material.type != Material.MA_TYPE_GOOD:
             raise exceptions.APIException('军检必须是成品')