diff --git a/CREATE_BRIDGE.md b/CREATE_BRIDGE.md
index 791a28fb..a7a0f455 100644
--- a/CREATE_BRIDGE.md
+++ b/CREATE_BRIDGE.md
@@ -112,7 +112,6 @@ The `Item` class is used to store parameter that are collected in the [`collectD
 
 ```PHP
 $item->uri // URI to reach the subject ("http://...")
-$item->thumbnailUri // URI for the thumbnail ("http://...")
 $item->title // Title of the item
 $item->name // Name of the item
 $item->timestamp // Timestamp of the item in numeric format (use strtotime)
@@ -138,7 +137,6 @@ The following list provides an overview of the parameters used by the other form
 Parameter | ATOM | HTML | (M)RSS
 ----------|------|------|-------
 `uri`|X|X|X
-`thumbnailUri`|||X
 `title`|X|X|X
 `name`|X||
 `timestamp`|X|X|X
diff --git a/formats/MrssFormat.php b/formats/MrssFormat.php
index a5e6cd20..d80b267f 100644
--- a/formats/MrssFormat.php
+++ b/formats/MrssFormat.php
@@ -25,7 +25,6 @@ class MrssFormat extends FormatAbstract{
             $itemTitle = strip_tags(is_null($data->title) ? '' : $data->title);
             $itemUri = is_null($data->uri) ? '' : $data->uri;
             $itemAuthor = is_null($data->author) ? '' : $data->author;
-            $itemThumbnailUri = is_null($data->thumbnailUri) ? '' : $data->thumbnailUri;
             $itemTimestamp = is_null($data->timestamp) ? '' : date(DATE_RFC2822, $data->timestamp);
             // We prevent content from closing the CDATA too early.
             $itemContent = is_null($data->content) ? '' : htmlspecialchars($this->sanitizeHtml(str_replace(']]>','',$data->content)));
@@ -39,8 +38,6 @@ class MrssFormat extends FormatAbstract{
         <pubDate>{$itemTimestamp}</pubDate>
         <description>{$itemContent}</description>
         <author>{$itemAuthor}</author>
-        <media:title>{$itemTitle}</media:title>
-        <media:thumbnail url="{$itemThumbnailUri}" />
     </item>
 
 EOD;