diff --git a/Architecture.md b/Architecture.md
index 7c0d060..78036b5 100644
--- a/Architecture.md
+++ b/Architecture.md
@@ -57,6 +57,7 @@ limits:
 ```
 
 ### Internal Worker architecture
+Picture below is overall internal architecture of worker, which shows its defined classes with private variables and public functions. Vector version of this picture is available [here](https://github.com/ReCodEx/GlobalWiki/blob/master/images/Worker_Internal_Architecture.pdf).
 ![Internal Worker architecture](https://github.com/ReCodEx/GlobalWiki/blob/master/images/Worker_Internal_Architecture.png)
 
 ## File Server