Proper use of User autocmd

autoload/startify.vim

@@ -143,7 +143,7 @@ function! startify#insane_in_the_membrane() abort
 
   call cursor((s:show_special ? 2 : 0) + s:headoff + s:secoff, 5)
 
-  silent! doautocmd <nomodeline> startify User
+  silent! doautocmd <nomodeline> startify User Startified
 endfunction
 
 " Function: #session_load {{{1

syntax/startify.vim

@@ -26,9 +26,9 @@ if exists('g:startify_custom_header')
 endif
 
 if exists('g:startify_custom_footer')
-  autocmd startify User <buffer>
+  autocmd startify User Startified
         \ execute 'syntax region StartifyFooter start=/\%'. (startify#get_lastline() + 1) .'l/ end=/*/' |
-        \ autocmd! startify User <buffer>
+        \ autocmd! startify User
 endif
 
 highlight default link StartifyHeader  Normal