diff --git a/reference/ibase/book.xml b/reference/ibase/book.xml
index 7e810dbc36..17f532a71f 100644
--- a/reference/ibase/book.xml
+++ b/reference/ibase/book.xml
@@ -34,8 +34,7 @@
     This extension supports InterBase versions 6 and up and Firebird version 2.0 and up.
    </para>
    <para>
-    This database uses a single quote (') character for escaping, a
-    behavior similar to the Sybase database, add to your
+    This database uses a single quote (') character for escaping (Deprecated in PHP 5.3.0. Removed in PHP 5.4.0)  add to your
     &php.ini; the following directive:
     <informalexample>
      <programlisting role="php.ini">