diff --git a/reference/ibase/reference.xml b/reference/ibase/reference.xml
index 2f6a06116a..45eeac9889 100644
--- a/reference/ibase/reference.xml
+++ b/reference/ibase/reference.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.9 $ -->
+<!-- $Revision: 1.10 $ -->
  <reference id="ref.ibase">
   <title>Firebird/InterBase Functions</title>
   <titleabbrev>Firebird/InterBase</titleabbrev>
@@ -17,7 +17,7 @@
     <para>
      InterBase is the name of the closed-source variant of this RDBMS that
      was developed by Borland/Inprise. More information about InterBase is 
-     available at <ulink>&url.ibase;</ulink>.
+     available at <ulink url="&url.ibase;">&url.ibase;</ulink>.
     </para>
     <para>
      Firebird is a commercially independent project of C and C++ programmers,
@@ -25,7 +25,7 @@
      relational database management system based on the source code released by
      Inprise Corp (now known as Borland Software Corp) under the InterBase
      Public License v.1.0 on 25 July, 2000. More information about Firebird is 
-     available at <ulink>&url.firebird;</ulink>.
+     available at <ulink url="&url.firebird;">&url.firebird;</ulink>.
     </para>
     <note>
      <para>