diff --git a/README.md b/README.md
index 8867f90..b218f37 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@ bash installer.sh 2>&1 | tee output.log
 ```  
 
 ```  
-### Sources
+#### Sources
 
 https://linuxize.com/post/set-up-an-email-server-with-postfixadmin
 ```  
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