diff --git a/Installation.md b/Installation.md
index 1d67670..a8c05d5 100644
--- a/Installation.md
+++ b/Installation.md
@@ -52,15 +52,8 @@ try using `Windows 8` compatibility mode.
 #### MacOS installation    
 ##### x86_64 version
 see: KindleComicConverter_osx_*.dmg in **https://github.com/ciromattia/kcc/releases**   
-If you can't open the last beta and the OS says it's damaged, fix it with:  
+If you can't open the last beta, fix it with:  
 - right click on kcc icon -> click `open` -> click `open on popup`  
-- or use `spctl --master-disable`. To re-enable it you just change it to this: `sudo spctl --master-enable`
-
-to disable the quarantine popup:
-```
-xattr -d com.apple.quarantine /Applications/Kindle\ Comic\ Converter.app
-xattr -d com.apple.quarantine -- /Applications/Kindle\ Comic\ Converter.app/Contents/Resources/7z
-```
 
 ##### M1/M2 arm64 version