diff --git a/inc/Service/Media/MediaException.php b/inc/Service/Media/MediaException.php
index 7e9bd65f..985b4e5d 100644
--- a/inc/Service/Media/MediaException.php
+++ b/inc/Service/Media/MediaException.php
@@ -27,4 +27,8 @@ class MediaException extends \RuntimeException {
 	 * Bad media type (mime) supplied to the handler.
 	 */
 	public const ERR_BAD_MEDIA_TYPE = 5;
+	/**
+	 * Unsupported handler.
+	 */
+	public const ERR_BAD_HANDLER = 6;
 }