diff --git a/firmware/drivers/audio/wm8751.c b/firmware/drivers/audio/wm8751.c
index e7c0b18da3..2adbdcaa56 100644
--- a/firmware/drivers/audio/wm8751.c
+++ b/firmware/drivers/audio/wm8751.c
@@ -257,7 +257,7 @@ void audiohw_set_treble(int value)
 
 void audiohw_set_prescaler(int value)
 {
-    prescaler = 2 * value;
+    prescaler = 3 * value / 15;
     wmcodec_write(LEFTGAIN, 0xff - (prescaler & LEFTGAIN_LDACVOL));
     wmcodec_write(RIGHTGAIN, RIGHTGAIN_RDVU |
                   (0xff - (prescaler & RIGHTGAIN_RDACVOL)));
diff --git a/firmware/sound.c b/firmware/sound.c
index 2973721e1c..b56e610034 100644
--- a/firmware/sound.c
+++ b/firmware/sound.c
@@ -296,7 +296,7 @@ void sound_set_bass(int value)
 
 #if !defined(AUDIOHW_HAVE_CLIPPING)
 #if defined(HAVE_WM8750) || defined(HAVE_WM8751)
-    current_bass = value / 15;
+    current_bass = value;
 #else
     current_bass =  value * 10;
 #endif
@@ -320,7 +320,7 @@ void sound_set_treble(int value)
 
 #if !defined(AUDIOHW_HAVE_CLIPPING)
 #if defined(HAVE_WM8750) || defined(HAVE_WM8751)
-    current_treble = value / 15;
+    current_treble = value;
 #else
     current_treble = value * 10;
 #endif