diff --git a/src/maths.cpp b/src/maths.cpp
index f79e09932..a00b005a7 100644
--- a/src/maths.cpp
+++ b/src/maths.cpp
@@ -151,8 +151,8 @@ void varioWakeup()
 #if defined(PCBSTD)
     tmr10ms_t tmr10ms = get_tmr10ms();
     if (tmr10ms > s_varioTmr) {
-      uint8_t SoundVarioBeepTime = (1600 - verticalSpeed) / 100;
-      uint8_t SoundVarioBeepFreq = max(40, (verticalSpeed * 10 + 20000) >> 8);
+      uint8_t SoundVarioBeepTime = limit((uint8_t)5, (uint8_t)((1600 - verticalSpeed) / 100), (uint8_t)30);
+      uint8_t SoundVarioBeepFreq = limit((uint8_t)40, (uint8_t)((verticalSpeed * 10 + 20000) >> 8), (uint8_t)120);
       if (verticalSpeed >= 0)
         s_varioTmr = tmr10ms + (SoundVarioBeepTime*2);
       else