diff --git a/index.bs b/index.bs
index f4f9f43d..c714592f 100644
--- a/index.bs
+++ b/index.bs
@@ -4408,7 +4408,7 @@ Of the extended attributes defined in this specification, only the [{{Exposed}}]
 
 <div class="example" id="example-namespace">
 
-    The following [=IDL fragment=] defines an
+    The following [=IDL fragment=] defines a
     [=namespace=].
 
     <pre highlight="webidl">