diff --git a/reference/mysql/functions/mysql-create-db.xml b/reference/mysql/functions/mysql-create-db.xml
index 10436a5298..dbc31c22ed 100644
--- a/reference/mysql/functions/mysql-create-db.xml
+++ b/reference/mysql/functions/mysql-create-db.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.4 $ -->
+<!-- $Revision: 1.5 $ -->
 <!-- splitted from ./en/functions/mysql.xml, last change in rev 1.2 -->
   <refentry id="function.mysql-create-db">
    <refnamediv>
@@ -48,9 +48,15 @@
      <para>
       The function <function>mysql_create_db</function> is deprecated. It
       is preferable to use <function>mysql_query</function> to issue a
-      SQL CREATE DATABASE Statement instead.
+      <literal>SQL CREATE DATABASE</literal> Statement instead.
      </para>
     </note>
+    <warning>
+     <para>
+      This function will not be available
+      if the MySQL extension was built against a MySQL 4.x client library.
+     </para> 
+    </warning>
     <para>
      See also: <function>mysql_drop_db</function>,
                <function>mysql_query</function>.
diff --git a/reference/mysql/functions/mysql-drop-db.xml b/reference/mysql/functions/mysql-drop-db.xml
index c145ce6ca7..9b690c5091 100644
--- a/reference/mysql/functions/mysql-drop-db.xml
+++ b/reference/mysql/functions/mysql-drop-db.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.6 $ -->
+<!-- $Revision: 1.7 $ -->
 <!-- splitted from ./en/functions/mysql.xml, last change in rev 1.2 -->
   <refentry id="function.mysql-drop-db">
    <refnamediv>
@@ -30,10 +30,16 @@
     <note>
      <para>
       The function <function>mysql_drop_db</function> is deprecated. It is 
-      preferable to use <function>mysql_query</function> to issue a SQL
-      DROP DATABASE statement instead.
+      preferable to use <function>mysql_query</function> to issue a 
+      <literal>SQL DROP DATABASE</literal> statement instead.
      </para>
     </note>
+    <warning>
+     <para>
+      This function will not be available
+      if the MySQL extension was built against a MySQL 4.x client library
+     </para>
+    </warning>
     <para>
      See also <function>mysql_create_db</function>, and
      <function>mysql_query</function>.