diff --git a/ftdetect/markdown.vim b/ftdetect/markdown.vim
new file mode 100644
index 0000000..1dd2602
--- /dev/null
+++ b/ftdetect/markdown.vim
@@ -0,0 +1 @@
+au BufRead,BufNewFile *.Rmd,*.rmd,*.md,*.markdown,*.mdown set filetype=markdown