diff --git a/src/reference/docbook/testing.xml b/src/reference/docbook/testing.xml
index 2e1ec6f6341..7e819cec47f 100644
--- a/src/reference/docbook/testing.xml
+++ b/src/reference/docbook/testing.xml
@@ -1,12 +1,12 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<chapter version="5.0"
-         xsi:schemaLocation="http://docbook.org/ns/docbook http://www.docbook.org/xml/5.0/xsd/docbook.xsd http://www.w3.org/1999/xlink http://www.docbook.org/xml/5.0/xsd/xlink.xsd"
-         xml:id="testing" xmlns="http://docbook.org/ns/docbook"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xmlns:xs="http://www.w3.org/2001/XMLSchema"
-         xmlns:xl="http://www.w3.org/1999/xlink"
-         xmlns:xi="http://www.w3.org/2001/XInclude"
-         xmlns:ns="http://docbook.org/ns/docbook">
+<chapter xml:id="testing"
+	xmlns="http://docbook.org/ns/docbook" version="5.0"
+    xmlns:xl="http://www.w3.org/1999/xlink"
+    xmlns:xi="http://www.w3.org/2001/XInclude"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="
+        http://docbook.org/ns/docbook http://www.docbook.org/xml/5.0/xsd/docbook.xsd
+        http://www.w3.org/1999/xlink http://www.docbook.org/xml/5.0/xsd/xlink.xsd">
   <title>Testing</title>
 
   <section xml:id="testing-introduction">
@@ -2054,7 +2054,7 @@ public class WacTests {
     @Autowired WebApplicationContext wac; // cached
 
     @Autowired MockServletContext servletContext; // cached
-    
+
     @Autowired MockHttpSession session;
 
     @Autowired MockHttpServletRequest request;