diff --git a/vim/vimrc b/vim/vimrc
index dc7d6b2..850c130 100644
--- a/vim/vimrc
+++ b/vim/vimrc
@@ -501,10 +501,10 @@ augroup AGW
 	\	endif
 
 	" .rkt → Racket
-	au BufRead,BufNewFile *.rkt set syntax=racket
+	au BufRead,BufNewFile *.rkt setlocal filetype=racket
 
 	" .edf → conf
-	au BufRead,BufNewFile *.edf set syntax=conf
+	au BufRead,BufNewFile *.edf setlocal filetype=conf
 
 	" disable most ftplugins
 	au BufReadPre * let b:did_ftplugin=1
@@ -514,7 +514,7 @@ augroup AGW
 	" to fix this we simply do the same thing before it has a chance to
 	au BufRead,BufNewFile Cargo.toml
 	\	if &filetype == "" |
-	\		set filetype=toml |
+	\		setlocal filetype=toml |
 	\	endif
 
 	" close empty buffers automatically