diff --git a/firmware/export/pcm_playback.h b/firmware/export/pcm_playback.h
index eb952d3a25..c29cd2a03e 100644
--- a/firmware/export/pcm_playback.h
+++ b/firmware/export/pcm_playback.h
@@ -47,7 +47,6 @@ void pcm_play_set_watermark(int numbytes, void (*callback)(int bytes_left));
 void pcm_set_boost_mode(bool state);
 bool pcm_is_lowdata(void);
 void pcm_flush_audio(void);
-void pcm_flush_buffer(long length);
 bool pcm_crossfade_init(void);
 void audiobuffer_add_event(void (*event_handler)(void));
 unsigned int audiobuffer_get_latency(void);