diff --git a/inc/toolbox.class.php b/inc/toolbox.class.php
index 23860cfc344..bbe760ffe24 100644
--- a/inc/toolbox.class.php
+++ b/inc/toolbox.class.php
@@ -2498,7 +2498,7 @@ static function convertTagToImage($content_text, CommonDBTM $item, $doc_data=arr
          preg_match_all('/'.Document::getImageTag('(([a-z0-9]+|[\.\-]?)+)').'/', $content_text,
                         $matches, PREG_PATTERN_ORDER);
          if (isset($matches[1]) && count($matches[1])) {
-            $doc_data = $doc->find("`tag` IN('".implode("','", array_unique($matches[1]))."')");
+            $doc_data = $document->find("`tag` IN('".implode("','", array_unique($matches[1]))."')");
          }
       }