diff --git a/runtime/ftplugin/xsd.vim b/runtime/ftplugin/xsd.vim
index b033760..6a4a193 100644
--- a/runtime/ftplugin/xsd.vim
+++ b/runtime/ftplugin/xsd.vim
@@ -36,3 +36,4 @@
 
 " Restore the saved compatibility options.
 let &cpo = s:save_cpo
+unlet s:save_cpo