diff --git a/src/ffmpeg-audio-thumbnailer.thumbnailer b/src/ffmpeg-audio-thumbnailer.thumbnailer
index 826120e..30532e0 100644
--- a/src/ffmpeg-audio-thumbnailer.thumbnailer
+++ b/src/ffmpeg-audio-thumbnailer.thumbnailer
@@ -1,4 +1,4 @@
 [Thumbnailer Entry]
 TryExec=ffmpeg
 Exec=ffmpeg -i %i %o -fs %s
-MimeType=audio/mpeg;audio/flac;audio/wavpack;audio/webm;audio/mp4;audio/aac
+MimeType=audio/mpeg;audio/flac;audio/wavpack;audio/webm;audio/mp4;audio/aac;audio/x-matroska