diff --git a/config/filetypes.vimrc b/config/filetypes.vimrc
index 3132f79..f6f482d 100644
--- a/config/filetypes.vimrc
+++ b/config/filetypes.vimrc
@@ -1,6 +1,9 @@
-au BufNewFile,BufRead *.i       set filetype=swig
-au BufNewFile,BufRead *.swg     set filetype=swig
-au BufNewFile,BufRead *.g       set filetype=antlr3
-au BufNewFile,BufRead *.g4      set filetype=antlr4
-au BufNewFile,BufRead *.gv      set filetype=dot
-au BufNewFile,BufRead *.tikz    set filetype=tex
+augroup filetypedetect
+    au BufNewFile,BufRead *.i       set filetype=swig
+    au BufNewFile,BufRead *.swg     set filetype=swig
+    au BufNewFile,BufRead *.g       set filetype=antlr3
+    au BufNewFile,BufRead *.g4      set filetype=antlr4
+    au BufNewFile,BufRead *.gv      set filetype=dot
+    au BufNewFile,BufRead *.tikz    set filetype=tex
+    au BufRead,BufNewFile *.tex     set filetype=tex
+augroup END