diff --git a/src/apps/mediaplayer/Controller.h b/src/apps/mediaplayer/Controller.h
index 57e4b82647..dd2a89f233 100644
--- a/src/apps/mediaplayer/Controller.h
+++ b/src/apps/mediaplayer/Controller.h
@@ -24,6 +24,8 @@
 #include <MediaNode.h>
 
 class BBitmap;
+class BMediaFile;
+class BMediaTrack;
 class VideoView;
 
 class Controller