diff --git a/reference/mysql/functions/mysql-data-seek.xml b/reference/mysql/functions/mysql-data-seek.xml
index 1ddc807664..c38016a528 100644
--- a/reference/mysql/functions/mysql-data-seek.xml
+++ b/reference/mysql/functions/mysql-data-seek.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.8 $ -->
+<!-- $Revision: 1.9 $ -->
 <!-- splitted from ./en/functions/mysql.xml, last change in rev 1.2 -->
   <refentry id="function.mysql-data-seek">
    <refnamediv>
@@ -25,7 +25,9 @@
     <para>
      <parameter>Row_number</parameter> starts at 0. The <parameter>
      row_number</parameter> should be a value in the range from 0 to
-     mysql_num_rows - 1.
+     mysql_num_rows - 1. However if the result set is empty (mysql_num_rows ==
+     0), a seek to 0 will fail with a warning and
+     <function>mysql_data_seek</function> will return &false;.
     </para>
     <note>
      <para>