diff --git a/.config/vim/vim_uni b/.config/vim/vim_uni
index 5d557b0..e962d16 100644
--- a/.config/vim/vim_uni
+++ b/.config/vim/vim_uni
@@ -90,7 +90,7 @@ augroup END
 " ----- indent for corresponding extension
 autocmd BufEnter *.py set ai sw=4 ts=4 sta et fo=croql
 " in C files, tabs looks like 4 spaces, but it's actually tabs
-autocmd BufEnter *.c set ai sw=4 ts=4 sta noet fo=croql
+autocmd Filetype c set ai sw=4 ts=4 sta noet fo=croql
 autocmd BufEnter *.md set ai sw=3 ts=3 sta et fo=croql
 autocmd Filetype html* set ai sw=4 ts=4 sta et fo=croql
 autocmd Filetype *css set ai sw=4 ts=4 sta et fo=croql