diff --git a/buzzer.sh b/buzzer.sh
index a78d423..efa1aac 100755
--- a/buzzer.sh
+++ b/buzzer.sh
@@ -17,6 +17,7 @@ buzzertimeout=2
 strobeduration=1
 
 volumetimeout=0.1
+volumemax=100
 
 playerfull="$(command -v $player) $playerparam"
 cmdgpio="$(command -v gpio)"