diff --git a/xml.html b/xml.html
index c3399ee..7f11209 100755
--- a/xml.html
+++ b/xml.html
@@ -103,7 +103,7 @@ mark{display:inline}
 <a>&lt;/foo>  <span class=u>&#x2461;</span></a></code></pre>
 <ol>
 <li>This is the <i>start tag</i> of the <code>foo</code> element.
-<li>This is the matching <i>end tag</i> of the <code>foo</code> element. Like balancing parentheses in writing or mathematics or code, every start tag much be <i>closed</i> (matched) by a corresponding end tag.
+<li>This is the matching <i>end tag</i> of the <code>foo</code> element. Like balancing parentheses in writing or mathematics or code, every start tag must be <i>closed</i> (matched) by a corresponding end tag.
 </ol>
 
 <p>Elements can be <i>nested</i> to any depth. An element <code>bar</code> inside an element <code>foo</code> is said to be a <i>subelement</i> or <i>child</i> of <code>foo</code>.