1 files changed, 5 insertions, 0 deletions

diff --git a/apps/pcmbuf.h b/apps/pcmbuf.h
index cce7c4ec77..629f969e7d 100644
--- a/apps/pcmbuf.h
+++ b/apps/pcmbuf.h
@@ -33,8 +33,13 @@ bool pcmbuf_add_chunk(void *addr, int size, void (*callback)(void));
 int pcmbuf_num_used_buffers(void);
 void pcmbuf_set_watermark(int numbytes, void (*callback)(int bytes_left));
 
+#ifdef HAVE_ADJUSTABLE_CPU_FREQ
 void pcmbuf_boost(bool state);
 void pcmbuf_set_boost_mode(bool state);
+#else
+#define pcmbuf_boost(state)          do { } while(0)
+#define pcmbuf_set_boost_mode(state) do { } while(0)
+#endif
 bool pcmbuf_is_lowdata(void);
 void pcmbuf_flush_audio(void);
 void pcmbuf_play_start(void);