diff --git a/poky/bitbake/contrib/vim/ftplugin/bitbake.vim b/poky/bitbake/contrib/vim/ftplugin/bitbake.vim
index db0d753..9e8d3e1 100644
--- a/poky/bitbake/contrib/vim/ftplugin/bitbake.vim
+++ b/poky/bitbake/contrib/vim/ftplugin/bitbake.vim
@@ -1,2 +1,13 @@
-set sts=4 sw=4 et
-set cms=#%s
+" Only do this when not done yet for this buffer
+if exists("b:did_ftplugin")
+  finish
+endif
+
+" Don't load another plugin for this buffer
+let b:did_ftplugin = 1
+
+let b:undo_ftplugin = "setl cms< sts< sw< et< sua<"
+
+setlocal commentstring=#\ %s
+setlocal softtabstop=4 shiftwidth=4 expandtab
+setlocal suffixesadd+=.bb,.bbclass