diff --git a/runtime/syntax/cweb.vim b/runtime/syntax/cweb.vim
index 4062b0a..39b593d 100644
--- a/runtime/syntax/cweb.vim
+++ b/runtime/syntax/cweb.vim
@@ -1,7 +1,7 @@
 " Vim syntax file
 " Language:	CWEB
 " Maintainer:	Andreas Scherer <andreas.scherer@pobox.com>
-" Last Change:	April 30, 2001
+" Last Change:	2011 Dec 25 by Thilo Six
 
 " Details of the CWEB language can be found in the article by Donald E. Knuth
 " and Silvio Levy, "The CWEB System of Structured Documentation", included as
@@ -36,6 +36,9 @@
 " C/C++ section of a CWEB chunk or in inner C/C++ context in "|...|" groups.
 syntax include @webIncludedC <sfile>:p:h/cpp.vim
 
+let s:cpo_save = &cpo
+set cpo&vim
+
 " Inner C/C++ context (ICC) should be quite simple as it's comprised of
 " material in "|...|"; however the naive definition for this region would
 " hickup at the innocious "\|" TeX macro.  Note: For the time being we expect
@@ -77,4 +80,6 @@
 
 let b:current_syntax = "cweb"
 
+let &cpo = s:cpo_save
+unlet s:cpo_save
 " vim: ts=8