diff --git a/config.org b/config.org
index 08f0502..7a38100 100644
--- a/config.org
+++ b/config.org
@@ -552,10 +552,10 @@ Installing and enabling ef-themes.
 Add a slight transparency to the frames. Code provided by David Wilson / System Crafters [[https://github.com/daviwil/emacs-from-scratch/blob/master/Emacs.org][Emacs from Scratch]] video series.
 
 #+begin_src emacs-lisp
-(setq mmk2410/frame-transparency '(95 . 95))
+(setq mmk2410/alpha-background 95)
 
-(set-frame-parameter (selected-frame) 'alpha mmk2410/frame-transparency)
-(add-to-list 'default-frame-alist `(alpha . ,mmk2410/frame-transparency))
+(set-frame-parameter nil 'alpha-background mmk2410/alpha-background)
+(add-to-list 'default-frame-alist `(alpha-background . ,mmk2410/alpha-background))
 #+end_src
 
 ** Switch theme