diff --git a/Customization.md b/Customization.md
index 1516b2b..f87934d 100644
--- a/Customization.md
+++ b/Customization.md
@@ -21,8 +21,8 @@ function! s:goyo_leave()
   endif
 endfunction
 
-autocmd User GoyoEnter nested call <SID>goyo_enter()
-autocmd User GoyoLeave nested call <SID>goyo_leave()
+autocmd! User GoyoEnter nested call <SID>goyo_enter()
+autocmd! User GoyoLeave nested call <SID>goyo_leave()
 ```
 
 ## Disabling plugins
@@ -35,7 +35,7 @@ function! s:goyo_enter()
   wincmd w
 endfunction
 
-autocmd User GoyoEnter call <SID>goyo_enter()
+autocmd! User GoyoEnter call <SID>goyo_enter()
 ```
 
 ### ZoomWin
@@ -53,8 +53,8 @@ function! s:goyo_leave()
   command! <Plug>ZoomWin call ZoomWin()
 endfunction
 
-autocmd User GoyoEnter call <SID>goyo_enter()
-autocmd User GoyoLeave call <SID>goyo_leave()
+autocmd! User GoyoEnter call <SID>goyo_enter()
+autocmd! User GoyoLeave call <SID>goyo_leave()
 ```
 
 ## Ensure `:q` to quit even when Goyo is active
@@ -80,6 +80,6 @@ function! s:goyo_leave()
   endif
 endfunction
 
-autocmd User GoyoEnter call <SID>goyo_enter()
-autocmd User GoyoLeave call <SID>goyo_leave()
+autocmd! User GoyoEnter call <SID>goyo_enter()
+autocmd! User GoyoLeave call <SID>goyo_leave()
 ```
\ No newline at end of file