diff --git a/.config/vim/vimrc b/.config/vim/vimrc
index b822b0c..d694300 100644
--- a/.config/vim/vimrc
+++ b/.config/vim/vimrc
@@ -262,7 +262,7 @@ else
 endif
 
 " ARM assembly syntax highlighting
-au BufNewFile,BufRead *.s,*.S set filetype=arm
+autocmd BufNewFile,BufRead *.s,*.S set filetype=arm
 
 " Load filetype plugins
 filetype plugin indent on