diff --git a/runtime/ftplugin/xhtml.vim b/runtime/ftplugin/xhtml.vim
index a50ed92..21ed3e1 100644
--- a/runtime/ftplugin/xhtml.vim
+++ b/runtime/ftplugin/xhtml.vim
@@ -64,3 +64,4 @@
 
 " Restore the saved compatibility options.
 let &cpo = s:save_cpo
+unlet s:save_cpo