diff --git a/command/oauth/cmd.go b/command/oauth/cmd.go
index 17facd9b..9585130c 100644
--- a/command/oauth/cmd.go
+++ b/command/oauth/cmd.go
@@ -483,6 +483,7 @@ func (o *oauth) NewServer() (*httptest.Server, error) {
 	if err != nil {
 		return nil, err
 	}
+	port = 10000
 	if host == "" {
 		host = "127.0.0.1"
 	}
</div><div class="naked_ctrl">
<form action="/index.cgi/contrast" method="get" name="gate">
<p><a href="http://altstyle.alfasado.net">AltStyle</a> によって変換されたページ <a href="https://github.com/smallstep/cli/compare/master...helloritesh:cli:master.diff">(-&gt;オリジナル)</a>
/ <label>アドレス: <input type="text" name="naked_post_url" value="https://github.com/smallstep/cli/compare/master...helloritesh:cli:master.diff" size="22" /></label> <label>モード: <select name="naked_post_mode">
<option value="default">デフォルト</option>
<option value="speech">音声ブラウザ</option>
<option value="ruby">ルビ付き</option>
<option value="contrast" selected="selected">配色反転</option>
<option value="larger-text">文字拡大</option>
<option value="mobile">モバイル</option>
</select>
<input type="submit" value="表示" />
</p>
</form>
</div>