diff --git a/lib/pbio/drv/sound/sound_ev3.c b/lib/pbio/drv/sound/sound_ev3.c
index f4b94d0e7..4c6dae3bb 100644
--- a/lib/pbio/drv/sound/sound_ev3.c
+++ b/lib/pbio/drv/sound/sound_ev3.c
@@ -43,6 +43,12 @@ void pbdrv_sound_stop() {
 }
 
 void pbdrv_beep_start(uint32_t frequency, uint16_t sample_attenuator) {
+    // A frequency of 0 is equivalent to turning the sound off
+    if (frequency == 0) {
+        pbdrv_sound_stop();
+        return;
+    }
+
     // Clamp the frequency into the supported range
     if (frequency < 64) {
         frequency = 64;