diff --git a/chapter01/conventions.xml b/chapter01/conventions.xml
index ab8949f5d..b236639e7 100644
--- a/chapter01/conventions.xml
+++ b/chapter01/conventions.xml
@@ -5,7 +5,7 @@
 <para>To make things easy to follow, there are a number of conventions used
 throughout the book. Following are some examples:</para>
 
-<para><userinput>./configure --prefix=/usr</userinput></para>
+<para><screen><userinput>./configure --prefix=/usr</userinput></screen></para>
 
 <blockquote><para>This form of text is designed to be typed exactly 
 as seen unless otherwise noted in the surrounding text. It is also used