diff --git a/runtime/ftplugin/markdown.vim b/runtime/ftplugin/markdown.vim
index 9462082..53430d3 100644
--- a/runtime/ftplugin/markdown.vim
+++ b/runtime/ftplugin/markdown.vim
@@ -1,7 +1,7 @@
 " Vim filetype plugin
 " Language:		Markdown
 " Maintainer:		Tim Pope <vimNOSPAM@tpope.org>
-" Last Change:		2010 May 21
+" Last Change:		2011 Dec 14
 
 if exists("b:did_ftplugin")
   finish
@@ -14,6 +14,10 @@
 setlocal formatoptions+=tcqln
 setlocal formatlistpat=^\\s*\\d\\+\\.\\s\\+\\\|^[-*+]\\s\\+
 
-let b:undo_ftplugin .= "|setl cms< com< fo<"
+if exists('b:undo_ftplugin')
+  let b:undo_ftplugin .= "|setl cms< com< fo< flp<"
+else
+  let b:undo_ftplugin = "setl cms< com< fo< flp<"
+endif
 
 " vim:set sw=2: