diff --git a/firmware/export/tsc2100.h b/firmware/export/tsc2100.h
index fa4dbd849b..a1245bd898 100644
--- a/firmware/export/tsc2100.h
+++ b/firmware/export/tsc2100.h
@@ -131,9 +131,7 @@ void tsc2100_writereg(int page, int address, short value);
 #define TSAC5_ADDRESS       0x1e
 
 extern int tenthdb2master(int db);
-extern void audiohw_init(void);
 extern void audiohw_set_master_vol(int vol_l, int vol_r);
 extern void audiohw_set_lineout_vol(int vol_l, int vol_r);
-extern void audiohw_mute(bool mute);
 
 #endif
diff --git a/firmware/export/wm8731.h b/firmware/export/wm8731.h
index 1e4840d9c3..27c11434bb 100644
--- a/firmware/export/wm8731.h
+++ b/firmware/export/wm8731.h
@@ -29,7 +29,6 @@
 extern int tenthdb2master(int db);
 extern int tenthdb2mixer(int db);
 
-extern void audiohw_preinit(void);
 extern void audiohw_set_master_vol(int vol_l, int vol_r);
 extern void audiohw_set_nsorder(int order);
 extern void audiohw_set_sample_rate(int sampling_control);
diff --git a/firmware/export/wm8751.h b/firmware/export/wm8751.h
index c115ed4d75..2fbfdb3124 100644
--- a/firmware/export/wm8751.h
+++ b/firmware/export/wm8751.h
@@ -29,11 +29,8 @@
 
 extern int tenthdb2master(int db);
 
-extern void audiohw_preinit(void);
 extern void audiohw_set_master_vol(int vol_l, int vol_r);
 extern void audiohw_set_lineout_vol(int vol_l, int vol_r);
-extern void audiohw_set_bass(int value);
-extern void audiohw_set_treble(int value);
 extern void audiohw_set_frequency(int fsel);
 
 /* Register addresses and bits */