diff --git a/web/index.html b/web/index.html
index db773a3d..cd8e96ef 100644
--- a/web/index.html
+++ b/web/index.html
@@ -1098,7 +1098,7 @@ as <code>first-even</code> does above.</p>
 <p><code>(Option T)</code> is how absence is spelled: a lookup miss, an empty
 collection, the end of a stream. <code>match</code> works on an <code>Option</code>, a
 <code>defdata</code> and an enum, whose arms name cases; on a <code>bool</code>, whose arms
-are <code>true</code> and <code>false</code>; and on a number, a string or a
+are <code>true</code> and <code>false</code> and need no <code>_</code>; and on a number, a string or a
 <code>dyn</code>, whose arms are literals &mdash; <code>(match n 0 "zero" -1 "none" _ "some")</code>,
 or over a <code>dyn</code> also keywords such as <code>:north</code>
 &mdash; each compared with <code>=</code>, with a <code>_</code> arm required for the rest.