diff --git a/reference/tidy/tidy/repairstring.xml b/reference/tidy/tidy/repairstring.xml
index 5c20380300..6361ef9417 100644
--- a/reference/tidy/tidy/repairstring.xml
+++ b/reference/tidy/tidy/repairstring.xml
@@ -1,6 +1,6 @@
 <?xml version='1.0' encoding='utf-8'?>
-<!-- $Revision: 1.3 $ -->
-<refentry xml:id="tidy.repairstring" xmlns="http://docbook.org/ns/docbook">
+<!-- $Revision: 1.4 $ -->
+<refentry xml:id="tidy.repairstring" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
  <refnamediv>
   <refname>tidy::repairString</refname>
   <refname>tidy_repair_string</refname>