diff --git a/zencoding.vim b/zencoding.vim
index c041ca2..69d7197 100644
--- a/zencoding.vim
+++ b/zencoding.vim
@@ -1,8 +1,8 @@
 "=============================================================================
 " File: zencoding.vim
 " Author: Yasuhiro Matsumoto <mattn.jp@gmail.com>
-" Last Change: 06-Jul-2010.
-" Version: 0.43
+" Last Change: 06-Sep-2010.
+" Version: 0.44
 " WebPage: http://github.com/mattn/zencoding-vim
 " Description: vim plugins for HTML and CSS hi-speed coding.
 " SeeAlso: http://code.google.com/p/zen-coding/
@@ -116,7 +116,7 @@ for s:item in [
   if !exists('g:' . s:item.var)
     exe 'let g:' . s:item.var . " = '" . g:user_zen_leader_key . s:item.key . "'"
   endif
-  if !hasmapto(eval('g:' . s:item.var), s:item.mode)
+  if len(maparg(eval('g:' . s:item.var), s:item.mode)) == 0
     exe s:item.mode . 'map ' . s:target . ' ' . eval('g:' . s:item.var) . ' <plug>' . s:item.plug
   endif
 endfor
diff --git a/zencoding.vim.vimup b/zencoding.vim.vimup
index 346846b..f34164f 100644
--- a/zencoding.vim.vimup
+++ b/zencoding.vim.vimup
@@ -2,7 +2,7 @@ script_name: ZenCoding.vim
 script_id: '2981'
 script_type: utility
 script_package: zencoding.vim
-script_version: '0.43'
+script_version: '0.44'
 required_vim_version: '7.0'
 summary: vim plugins for HTML and CSS hi-speed coding.
 
@@ -95,6 +95,9 @@ install_details: |
   copy zencoding.vim to your plugin directory.
 
 versions:
+- '0.44': |
+   This is an upgrade for ZenCoding.vim:
+   fixed checking whether have mapping using maparg() / hasmapto().
 - '0.43': |
    This is an upgrade for ZenCoding.vim:
    fixed behavior for nested block. like "html:5>#page>(header#globalHeader>(hgroup>h1+h2)+(nav>ul>li*3>a)+(form>p.siteSearch>input+input[type=button]))+(#contents>(#main>(section>h2+p*5)+p.pagetop>a[href=#page])+(#sub>p+(nav>ul>li>a)))+(footer#globalFoooter>(ul>li>a)+(p.copyright>small))"