diff --git a/README.md b/README.md
index 10a7524..a9ac102 100644
--- a/README.md
+++ b/README.md
@@ -6,28 +6,6 @@ How to include graphviz graphs in github README.md
 ### New Plantuml activity Diagram ###
 ![Alt text](https://g.gravizo.com/source/custom_mark21?https%3A%2F%2Fraw.githubusercontent.com%2FTLmaK0%2Fgravizo%2Fmaster%2FREADME.md)
 
-<details> 
-<summary></summary>
-custom_mark21	
-@startuml
-start
-:init;
--> test of color;
-if (color?) is (<color:red>red) then
-:print red;
-else 
-:print not red;
-note right: no color
-endif
-partition End {
-:end;
-}
--> this is the end;
-end
-@enduml
-custom_mark21
-</details>
-
 ```
 ![Alt text](https://g.gravizo.com/source/custom_mark21?https%3A%2F%2Fraw.githubusercontent.com%2FTLmaK0%2Fgravizo%2Fmaster%2FREADME.md)