diff --git a/docs/DeveloperGuide.md b/docs/DeveloperGuide.md
index e9af50c2b99..25d5bf7b917 100644
--- a/docs/DeveloperGuide.md
+++ b/docs/DeveloperGuide.md
@@ -32,13 +32,6 @@ Refer to the guide [_Setting up and getting started_](SettingUp.md).
 :bulb: **Tip:** The `.puml` files used to create diagrams in this document `docs/diagrams` folder. Refer to the [_PlantUML Tutorial_ at se-edu/guides](https://se-education.org/guides/tutorials/plantUml.html) to learn how to create and edit diagrams.
 </div>
 
-</div>
-</details>
-
-<details open>
-<summary><strong>Architecture</strong></summary>
-<div markdown="1">
-
 ### Architecture
 
 <img src="images/ArchitectureDiagram.png" width="280" />