Tvheadend

Tvheadend seems to add one episode number that dosn`t exist

In this case tvheadend says Season 2 episode 5 of 23. But xml file says episode 5 of 22 ( that is correct )

Se example below xml of Vampire Diaries episode 5 of 22, season 2.

</programme>
<programme start="20130510072500 +0200" stop="20130510082000 +0200" channel="tv6.se">
<title lang="sv">The Vampire Diaries</title>
<sub-title lang="sv">Kill or Be Killed</sub-title>
<desc lang="sv">Del 5 av 22 säsong 2. Medan Stefan och Damon bråkar om hur familjen Lockwood ska hanteras lär sig Tyler mer om Mason och familjens förbannelse. Jeremy kommer närmare Lockwood-mysteriet genom att umgås med Tyler. Sheriff Forbes får chockerande information om Mason, vilket leder till en kaotisk natt.</desc>
<credits>
<director>Jeff Woolnough</director>
<actor>Nina Dobrev</actor>
<actor>Paul Wesley</actor>
<actor>Ian Somerhalder</actor>
<actor>Matthew Davis</actor>
<actor>Michael Trevino</actor>
<actor>Zach Roerig</actor>
<actor>Steven R. McQueen</actor>
<actor>Katerina Graham</actor>
<actor>Candice Accola</actor>
<actor>David Anders</actor>
<actor>Marguerite MacIntyre</actor>
<actor>Susan Walters</actor>
<actor>Claire Holt</actor>
<actor>Joseph Morgan</actor>
<actor>Daniel Gillies</actor>
<actor>Torrey DeVitto</actor>
<actor>Sara Canning</actor>
<actor>Taylor Kinney</actor>
<writer>Mike Daniels</writer>
</credits>
<date>2009</date>
<category lang="en">series</category>
<category lang="en">Drama</category>
<url>http://thetvdb.com/?tab=episode&amp;seriesid=95491&amp;seasonid=256621&amp;id=2821891&amp;lid=8&lt;/url>
<episode-num system="xmltv_ns">1.4/22. </episode-num>
<episode-num system="onscreen">Del 5 av 22 säsong 2</episode-num>
<video>
<aspect>4:3</aspect>
</video>
<star-rating>
<value>4/5</value>
</star-rating>
<icon src="http://tvimg.net/cache/138x203-0/poster/a365be1b83278ccd03567a0f81ef0072.jpg" />
</programme>