Index: index.xml
===================================================================
--- index.xml
+++ index.xml
@@ -219,7 +219,7 @@
 	applications?</h4>
 
 	<p>They appear often with GTK3 applications, because they use
-	  new method for decorating windows, calls
+	  a new method for decorating windows, calls
 	  <acronym title="Client-Side Decorations">CSD</acronym>.</p>
 
 	<p>To avoid this artifact, compositing must be enabled.</p>