diff --git a/SeedDMS_Core/Core/inc.ClassDocument.php b/SeedDMS_Core/Core/inc.ClassDocument.php
index 47d2abe96..20885b04d 100644
--- a/SeedDMS_Core/Core/inc.ClassDocument.php
+++ b/SeedDMS_Core/Core/inc.ClassDocument.php
@@ -3163,10 +3163,27 @@ class SeedDMS_Core_DocumentContent extends SeedDMS_Core_Object { /* {{{ */
 		return true;
 	} /* }}} */
 
+	function setMimeType($newMimetype) { /* {{{ */
+		$db = $this->_document->getDMS()->getDB();
+
+		$newMimetype = trim($newMimetype);
+
+		if(!$newMimetype)
+			return false;
+
+		$queryStr = "UPDATE `tblDocumentContent` SET `mimeType` = ".$db->qstr($newMimetype)." WHERE `document` = " . $this->_document->getID() . " AND `version` = " . $this->_version;
+		if (!$db->getResult($queryStr))
+			return false;
+
+		$this->_mimeType = $newMimetype;
+
+		return true;
+	} /* }}} */
+
 	function setComment($newComment) { /* {{{ */
 		$db = $this->_document->getDMS()->getDB();
 
-		$queryStr = "UPDATE `tblDocumentContent` SET `comment` = ".$db->qstr($newComment)." WHERE `document` = " . $this->_document->getID() .	" AND `version` = " . $this->_version;
+		$queryStr = "UPDATE `tblDocumentContent` SET `comment` = ".$db->qstr($newComment)." WHERE `document` = " . $this->_document->getID() . " AND `version` = " . $this->_version;
 		if (!$db->getResult($queryStr))
 			return false;