diff --git a/Writerside/in.tree b/Writerside/in.tree
index 1fff712..afd691d 100644
--- a/Writerside/in.tree
+++ b/Writerside/in.tree
@@ -15,6 +15,7 @@
         <toc-element topic="IntroductionOOAD.md"/>
         <toc-element topic="SoftwareProcesses.md"/>
         <toc-element topic="ImplementingForMaintainability.md"/>
+        <toc-element topic="DesigningForMaintainability.md"/>
     </toc-element>
     <toc-element toc-title="Rechnerarchitektur">
         <toc-element topic="Historie.md"/>
diff --git a/Writerside/topics/OOAD/DesigningForMaintainability.md b/Writerside/topics/OOAD/DesigningForMaintainability.md
new file mode 100644
index 0000000..d59ec37
--- /dev/null
+++ b/Writerside/topics/OOAD/DesigningForMaintainability.md
@@ -0,0 +1 @@
+# Designing for Maintainability
\ No newline at end of file
diff --git a/Writerside/topics/OOAD/ImplementingForMaintainability.md b/Writerside/topics/OOAD/ImplementingForMaintainability.md
index 2377248..24b606b 100644
--- a/Writerside/topics/OOAD/ImplementingForMaintainability.md
+++ b/Writerside/topics/OOAD/ImplementingForMaintainability.md
@@ -11,7 +11,6 @@
 - [Refactoring _by Martin Fowler_](https://learning.oreilly.com/library/view/refactoring-wie/9783958459434/)
   - [refactoring catalog](https://refactoring.com/catalog/)
 - [Clean Code _by Uncle Bob_](https://learning.oreilly.com/library/view/clean-code/9783826655487/)
-- 
 
 
 ## Introduction
@@ -208,4 +207,6 @@ void printDetails(double outstanding){
 
 - Minimiere den Grad von Interdependencies
 
-![image_53.png](image_53.png)
\ No newline at end of file
+![image_53.png](image_53.png)
+
+