diff --git a/gio/gdbus-2.0/codegen/codegen.py b/gio/gdbus-2.0/codegen/codegen.py
index 119c97d68..3b3afe611 100644
--- a/gio/gdbus-2.0/codegen/codegen.py
+++ b/gio/gdbus-2.0/codegen/codegen.py
@@ -29,10 +29,11 @@ from . import dbustypes
 from .utils import print_error
 
 LICENSE_STR = '''/*
- * Generated by gdbus-codegen {!s} from {!s}. DO NOT EDIT.
+ * This file is generated by gdbus-codegen, do not modify it.
  *
  * The license of this code is the same as for the D-Bus interface description
- * it was derived from.
+ * it was derived from. Note that it links to GLib, so must comply with the
+ * LGPL linking clauses.
  */\n'''
 
 def generate_namespace(namespace):