Mod rewrite 404 on google index
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my url is `site.com/nl/url-rewrite/categorie-1`
my mod rewrite rules are:

    # Rewrite taxonomy URLs
    #   Input:  LANG/url-rewrite/TERM
    #   Output: url_rewrite.php?term=TERM
    RewriteRule ^.{2}/url-rewrite/([A-Za-z0-9-]+)/?$ /url_rewrite.php?term=$1 [L]
    #   Input:  LANG/url-rewrite
    #   Output: url_rewrite.php
    RewriteRule ^.{2}/url-rewrite/?$ /url_rewrite.php [L]

This works fine (not shure if the 2nd rule is the best way to approach this)  

Now I'll get a link in google too `site.com/nl/url-rewrite/categorie-1`  
'categorie-1' is the seo friendly alias of my category

If the title of my category changes too 'Categorie 2', my alias will be 'categorie-2' (auto alias)

this link in google `site.com/nl/url-rewrite/categorie-1` will not work now  
how can I solve this?  
I used id's before, so my link would be `site.com/nl/url-rewrite/1/categorie-1`    
But that doens't look so good, I don't want any id's in the url