diff --git a/chapter2/02_Basic_Operators.html b/chapter2/02_Basic_Operators.html
index 96f4e42a..d006e721 100644
--- a/chapter2/02_Basic_Operators.html
+++ b/chapter2/02_Basic_Operators.html
@@ -694,7 +694,7 @@ let dogCow = dog + cow
 </code></pre>
 <p>这个例子中，<code>8</code>除于<code>2.5</code>等于<code>3</code>余<code>0.5</code>，所以结果是一个<code>Double</code>值<code>0.5</code>。</p>
 <p><img src="https://developer.apple.com/library/prerelease/ios/documentation/Swift/Conceptual/Swift_Programming_Language/Art/remainderFloat_2x.png" alt="Art/remainderFloat_2x.png" title="Art/remainderFloat_2x.png"></p>
-<h3 id="-">自增和自增运算</h3>
+<h3 id="-">自增和自减运算</h3>
 <p>和 C 语言一样，Swift 也提供了方便对变量本身加1或减1的自增（<code>++</code>）和自减（<code>--</code>）的运算符。其操作对象可以是整形和浮点型。
 ‌</p>
 <pre><code class="lang-swift">var i = 0