diff --git a/player/core.h b/player/core.h
index cb81c88b2e..fe7f380b2e 100644
--- a/player/core.h
+++ b/player/core.h
@@ -493,7 +493,6 @@ void run_playloop(struct MPContext *mpctx);
 void mp_idle(struct MPContext *mpctx);
 void idle_loop(struct MPContext *mpctx);
 int handle_force_window(struct MPContext *mpctx, bool force);
-void add_frame_pts(struct MPContext *mpctx, double pts);
 void seek_to_last_frame(struct MPContext *mpctx);
 
 // scripting.c