diff --git a/build/jam/HaikuImage b/build/jam/HaikuImage
index dc5fd4639c..4c13f6ad4b 100644
--- a/build/jam/HaikuImage
+++ b/build/jam/HaikuImage
@@ -60,7 +60,7 @@ BEOS_ADD_ONS_MEDIA = mixer.media_addon legacy.media_addon
 ;
 BEOS_ADD_ONS_MEDIA_PLUGINS = aiff_reader mp3_decoder musepack
 	raw_decoder wav_reader mov_reader au_reader avi_reader mp3_reader ogg
-	speex vorbis matroska
+	speex vorbis matroska mp4_reader
 	# ac3_decoder avcodec theora
 ;
 BEOS_ADD_ONS_SCREENSAVERS = Haiku ;