diff --git a/config.org b/config.org
index 4e99697..5c086c5 100644
--- a/config.org
+++ b/config.org
@@ -700,7 +700,7 @@
     There's a lot of boilerplate in C, so I want YASnippet enabled.
 
     #+begin_src emacs-lisp
-	  (add-hook 'c-mode-hook (lambda () (yas-minor-mode)))
+      (add-hook 'c-mode-hook (lambda () (yas-minor-mode)))
     #+end_src
 
 ** C++
@@ -1197,7 +1197,7 @@
    I want to indent with tabs (set to 4 characters wide):
 
    #+begin_src emacs-lisp
-	 (setq lua-indent-level 4)
+     (setq lua-indent-level 4)
    #+end_src
 
    I also want to be able to run =lua-format= on files with =C-c f=
@@ -1206,51 +1206,51 @@
    [[help:call-process-region][call-process-region]].
 
    #+begin_src emacs-lisp
-	 (defvar lua-format-binary "lua-format")
+     (defvar lua-format-binary "lua-format")
 
-	 (defun lua-format ()
-	   (interactive)
-	   (if (executable-find lua-format-binary)
-		   (let ((start (if (region-active-p) (region-beginning) (point-min)))
-				 (end (if (region-active-p) (region-end) (point-max))))
-			 (call-process-region start end lua-format-binary t '(t nil)))
-		 (error "%s" (concat lua-format-binary " not found."))))
+     (defun lua-format ()
+       (interactive)
+       (if (executable-find lua-format-binary)
+           (let ((start (if (region-active-p) (region-beginning) (point-min)))
+                 (end (if (region-active-p) (region-end) (point-max))))
+             (call-process-region start end lua-format-binary t '(t nil)))
+         (error "%s" (concat lua-format-binary " not found."))))
    #+end_src
 
    This then needs to be assigned to the keybinding:
 
    #+begin_src emacs-lisp
-	 (add-hook
-	  'lua-mode-hook
-	  (lambda () (define-key lua-mode-map (kbd "C-c f") 'lua-format)))
+     (add-hook
+      'lua-mode-hook
+      (lambda () (define-key lua-mode-map (kbd "C-c f") 'lua-format)))
    #+end_src
 
 ** BASIC
    =basic-mode= provides syntax highlighting and a few nice features:
 
    #+begin_src emacs-lisp
-	 (use-package basic-mode)
+     (use-package basic-mode)
    #+end_src
 
    As well as =.bas= files, I want to open all =.bbc= files in
    =basic-mode=:
 
    #+begin_src emacs-lisp
-	 (add-to-list 'auto-mode-alist '("\\.bbc\\'" . basic-mode))
+     (add-to-list 'auto-mode-alist '("\\.bbc\\'" . basic-mode))
    #+end_src
 
 ** Nix
    Basic editing support comes from =nix-mode=:
 
    #+begin_src emacs-lisp
-	 (use-package nix-mode)
+     (use-package nix-mode)
    #+end_src
 
    And =nix-update= provides a convenient way to update ~fetch~
    blocks:
 
    #+begin_src emacs-lisp
-	 (use-package nix-update)
+     (use-package nix-update)
    #+end_src
 
 ** SCAD
@@ -1258,7 +1258,7 @@
    stick to the basic mode:
 
    #+begin_src emacs-lisp
-	 (use-package scad-mode)
+     (use-package scad-mode)
    #+end_src
 
 * Tool Integrations
@@ -1375,7 +1375,7 @@
    ChatGPT.
 
    #+begin_src emacs-lisp
-	 (use-package chatgpt-shell)
+     (use-package chatgpt-shell)
    #+end_src
 
    [[help:chatgpt-shell-openai-key][chatgpt-shell-openai-key]] must also be set to a function that
@@ -1663,6 +1663,6 @@
   memory usage getting too high.
 
   #+begin_src emacs-lisp
-	(setq gc-cons-threshold 1000000)
-	(setq gc-cons-percentage 0.2)
+    (setq gc-cons-threshold 1000000)
+    (setq gc-cons-percentage 0.2)
   #+end_src