diff --git a/language/operators.xml b/language/operators.xml
index 3e7042c5f7..66f2a17a7e 100644
--- a/language/operators.xml
+++ b/language/operators.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.97 $ -->
+<!-- $Revision: 1.98 $ -->
  <chapter id="language.operators">
   <title>Operators</title>
   <simpara>
@@ -1111,9 +1111,10 @@ var_dump($a === $b); // bool(false)
   <sect1 id="language.operators.type">
    <title>Type Operators</title>
    <para>
-    PHP has a single type operator: <literal>instanceof</literal>. 
-    <literal>instanceof</literal> is used to determine whether a given
-    object is of a specified <link linkend="language.oop">object class</link>.
+    PHP has a single type operator: <literal>instanceof</literal> is used to
+    determine whether a given object, his parents or their implemented <link
+    linkend="language.oop5.interfaces">interfaces</link> are of a specified
+    <link linkend="language.oop5.basic.class">object class</link>.
    </para>
    <simpara>
     The <literal>instanceof</literal> operator was introduced in PHP 5.