<p>It'll probably be alright tomorrow. From <a href="http://meta.stackexchange.com/questions/5234/how-does-accepting-an-answer-work/5235#5235">How does accepting an answer work</a> on Meta Stack Overflow:</p>

<blockquote>
  <ul>
  <li>The accept rate is heavily cached and can take 24 hours or more to update.</li>
  </ul>
</blockquote>

<p>There are also a number of things that do not count towards the accept rate calculation.</p>

<blockquote>
  <p><strong>Which questions do not affect the accept rate?</strong></p>
  
  <ul>
  <li>Community Wiki questions</li>
  <li>Closed questions</li>
  <li>Questions with no answers</li>
  </ul>
</blockquote>