diff --git a/reference/pdo_mysql/reference.xml b/reference/pdo_mysql/reference.xml
index 4ef1dc5d512b..1debd2c19a32 100644
--- a/reference/pdo_mysql/reference.xml
+++ b/reference/pdo_mysql/reference.xml
@@ -104,6 +104,26 @@
         </para>
        </listitem>
       </varlistentry>
+      <varlistentry>
+       <term><literal>user</literal></term>
+       <listitem>
+        <simpara>
+         The name of the user for the connection. If you specify the user name
+         in the DSN and pass it as the second argument, PDO ignores the value of
+         the user name in DSN.
+        </simpara>
+       </listitem>
+      </varlistentry>
+      <varlistentry>
+       <term><literal>password</literal></term>
+       <listitem>
+        <simpara>
+         The password of the user for the connection. If you specify the
+         password in the DSN and pass it as the third argument, PDO ignores the
+         value of the password in DSN.
+        </simpara>
+       </listitem>
+      </varlistentry>
       <varlistentry>
        <term><literal>unix_socket</literal></term>
        <listitem>