diff --git a/core/subtitle_provider.h b/core/subtitle_provider.h
index 714f7e776..51c71604c 100644
--- a/core/subtitle_provider.h
+++ b/core/subtitle_provider.h
@@ -38,6 +38,7 @@
 
 
 #include <map>
+#include <wx/wxprec.h>
 
 
 class VideoProvider;
diff --git a/core/video_provider_avs.h b/core/video_provider_avs.h
index c9cff7233..1f11ddea7 100644
--- a/core/video_provider_avs.h
+++ b/core/video_provider_avs.h
@@ -83,6 +83,7 @@ private:
 	PClip ApplyDARZoom(double _zoom, double _dar, PClip videosource);
 	wxBitmap GetFrame(int n, bool force);
 	void LoadVSFilter();
+	void AttachOverlay(SubtitleProvider::Overlay *_overlay) {}
 
 public:
 	AvisynthVideoProvider(wxString _filename, wxString _subfilename);