diff --git a/hb_server/apps/mtm/views.py b/hb_server/apps/mtm/views.py
index c0e0e2c..de76da1 100644
--- a/hb_server/apps/mtm/views.py
+++ b/hb_server/apps/mtm/views.py
@@ -121,4 +121,4 @@ class OutputMaterialViewSet(CreateUpdateModelAMixin, ModelViewSet):
             return OutputMaterialListSerializer
         elif self.action == 'update':
             return OutputMaterialUpdateSerializer
-        return OutputMaterialSerializer
\ No newline at end of file
+        return OutputMaterialSerializer