diff --git a/wp-admin/options-permalink.php b/wp-admin/options-permalink.php
index df2e6f039c..f0fb6ba1fa 100644
--- a/wp-admin/options-permalink.php
+++ b/wp-admin/options-permalink.php
@@ -84,7 +84,11 @@ save_mod_rewrite_rules();
     <p> 
       <?php _e('Structure'); ?>: <input name="permalink_structure" type="text" class="code" style="width: 60%;" value="<?php echo $permalink_structure; ?>" size="50" /> 
     </p> 
+<?php if ($is_apache) : ?>
 	<p><?php _e('If you like, you may enter a custom prefix for your category URIs here. For example, <code>/taxonomy/categorias</code> would make your category links like <code>http://example.org/taxonomy/categorias/uncategorized/</code>. If you leave this blank the default will be used.') ?></p>
+<?php else : ?>
+	<p><?php _e('If you like, you may enter a custom prefix for your category URIs here. For example, <code>/index.php/taxonomy/categorias</code> would make your category links like <code>http://example.org/index.php/taxonomy/categorias/uncategorized/</code>. If you leave this blank the default will be used.') ?></p>
+<?php endif; ?>
 	<p> 
   <?php _e('Category base'); ?>: <input name="category_base" type="text" class="code"  value="<?php echo $category_base; ?>" size="30" /> 
      </p>