diff --git a/plugins/VideoThumbnails/VideoThumbnailsPlugin.php b/plugins/VideoThumbnails/VideoThumbnailsPlugin.php
index 758164923d..3cdf07478e 100644
--- a/plugins/VideoThumbnails/VideoThumbnailsPlugin.php
+++ b/plugins/VideoThumbnails/VideoThumbnailsPlugin.php
@@ -51,7 +51,7 @@ class VideoThumbnailsPlugin extends Plugin
     {
         // The calling function might accidentally pass application/ogg videos.
         // If that's a problem, let's fix it in the calling function.
-        if ($media !== 'video') {
+        if ($media !== 'video' || empty($file->filename)) {
             return true;
         }