diff --git a/samples/demo01.puml b/samples/demo01.puml
index 927ef1d..09af914 100644
--- a/samples/demo01.puml
+++ b/samples/demo01.puml
@@ -1,5 +1,7 @@
 @startuml
-!include ../puml/core.puml
+
+'!include ../puml/core.puml
+!include ./core.puml
 
 autonumber