diff --git a/autoload/neocomplcache/sources/snippets_complete.vim b/autoload/neocomplcache/sources/snippets_complete.vim
index 97e4afa..265d714 100644
--- a/autoload/neocomplcache/sources/snippets_complete.vim
+++ b/autoload/neocomplcache/sources/snippets_complete.vim
@@ -1,7 +1,7 @@
 "=============================================================================
 " FILE: snippets_complete.vim
 " AUTHOR:  Shougo Matsushita <Shougo.Matsu@gmail.com>
-" Last Modified: 02 Mar 2013.
+" Last Modified: 06 Mar 2013.
 " License: MIT license  {{{
 "     Permission is hereby granted, free of charge, to any person obtaining
 "     a copy of this software and associated documentation files (the
@@ -82,9 +82,9 @@ function! s:keyword_filter(snippets, cur_keyword_str) "{{{
   endfor
 
   if len(a:cur_keyword_str) > 1 && a:cur_keyword_str =~ '^\h\w*$'
-    " Use partial match by filter_str.
+    " Use partial match by word.
     let partial_list = filter(values(a:snippets),
-          \  printf('stridx(v:val.filter_str, %s) > 0',
+          \  printf('stridx(v:val.word, %s) > 0',
           \      string(a:cur_keyword_str)))
     for snippet in partial_list
       " Set refresh flag.
diff --git a/autoload/neosnippet.vim b/autoload/neosnippet.vim
index fa758c6..dabfe13 100644
--- a/autoload/neosnippet.vim
+++ b/autoload/neosnippet.vim
@@ -1,7 +1,7 @@
 "=============================================================================
 " FILE: neosnippet.vim
 " AUTHOR:  Shougo Matsushita <Shougo.Matsu@gmail.com>
-" Last Modified: 05 Mar 2013.
+" Last Modified: 06 Mar 2013.
 " License: MIT license  {{{
 "     Permission is hereby granted, free of charge, to any person obtaining
 "     a copy of this software and associated documentation files (the
@@ -140,7 +140,6 @@ function! s:set_snippet_dict(snippet_dict, snippets, dup_check, snippets_file) "
   for alias in get(a:snippet_dict, 'alias', [])
     let alias_snippet = copy(snippet)
     let alias_snippet.word = alias
-    let alias_snippet.filter_str = alias
 
     let a:snippets[alias] = alias_snippet
     let a:dup_check[alias] = alias_snippet
@@ -169,7 +168,6 @@ function! s:initialize_snippet(dict, path, line, pattern, name) "{{{
 
   let snippet = {
         \ 'word' : a:dict.name, 'snip' : a:dict.word,
-        \ 'filter_str' : a:dict.name . ' ' . a:dict.abbr,
         \ 'description' : a:dict.word,
         \ 'menu_template' : menu_prefix . abbr,
         \ 'menu_abbr' : abbr,
diff --git a/autoload/neosnippet/snippets/lua.snip b/autoload/neosnippet/snippets/lua.snip
index d10a438..be5408f 100644
--- a/autoload/neosnippet/snippets/lua.snip
+++ b/autoload/neosnippet/snippets/lua.snip
@@ -1,6 +1,6 @@
 # lua's indent plugin doesn't work well partly with markers. Use hard-tab for some of this snippet.
 snippet func
-alias   function name(args)...end
+abbr    function name(args)...end
 options word
 	function ${1:#:function_name}(${2:#:argument})
 		${0:TARGET}
diff --git a/doc/neosnippet.txt b/doc/neosnippet.txt
index b6c9a12..86b98b5 100755
--- a/doc/neosnippet.txt
+++ b/doc/neosnippet.txt
@@ -741,6 +741,9 @@ Because neosnippet uses select-mode to jump over placeholder.
 ==============================================================================
 CHANGELOG			*neosnippet-changelog*
 
+2013-03-06
+- Changed filtering behavior.
+
 2013-03-05
 - Fixed error in snippet source.