diff --git a/runtime/syntax/vim.vim b/runtime/syntax/vim.vim
index 2de81ae..625cf02 100644
--- a/runtime/syntax/vim.vim
+++ b/runtime/syntax/vim.vim
@@ -10,7 +10,7 @@
 if exists("b:current_syntax")
   finish
 endif
-let s:keepcpo= &cpo
+let s:keepcpo = &cpo
 set cpo&vim
 
 " vimTodo: contains common special-notices for comments {{{2