Value not in range

I’m trying to use the effect “Delay” but I keep getting the error message “value not in range -30 to 1” I have windows 10 and the latest version of Audacity. Does anyone know how to fix this??

Ensure that the “Delay level per echo (dB)” is set higher than -30 (negative 30), and less than +1. The factory default value is -6.00 (negative 6).