diff --git a/docs/05_Development/05_developer_guide.md b/docs/05_Development/05_developer_guide.md
index 408714f..ba1a227 100644
--- a/docs/05_Development/05_developer_guide.md
+++ b/docs/05_Development/05_developer_guide.md
@@ -60,11 +60,11 @@ graph TD
     end
 
     User <--> UI
-    UI --> API : REST (Chat, Save, Feedback)
-    UI -.-> DB : Direct Read (Graph Viz Performance)
-    API --> LLM : Embeddings & Completion
-    API --> DB : Read/Write
-    API --> FS : Read/Write (Source of Truth)
+    UI -- "REST (Chat, Save, Feedback)" --> API
+    UI -. "Direct Read (Graph Viz Performance)" .-> DB
+    API -- "Embeddings & Completion" --> LLM
+    API -- "Read/Write" --> DB
+    API -- "Read/Write (Source of Truth)" --> FS
 ```
 
 ### 2.2 Datenfluss-Muster