diff --git a/src/DryIoc/Expression.cs b/src/DryIoc/Expression.cs
index 8732f02fa..aae60c6f8 100644
--- a/src/DryIoc/Expression.cs
+++ b/src/DryIoc/Expression.cs
@@ -1,3 +1,4 @@
+// <auto-generated/>
 /*
 The MIT License (MIT)