diff --git a/src/kits/media/TrackReader.h b/src/kits/media/TrackReader.h
index acf7017803..090c776b66 100644
--- a/src/kits/media/TrackReader.h
+++ b/src/kits/media/TrackReader.h
@@ -10,6 +10,8 @@
 
 #include <MediaTrack.h>
 
+class BMediaFile;
+
 namespace BPrivate
 {