diff --git a/firmware/src/hw/potentiometer.cpp b/firmware/src/hw/potentiometer.cpp
index 6559b2b..617a1b5 100644
--- a/firmware/src/hw/potentiometer.cpp
+++ b/firmware/src/hw/potentiometer.cpp
@@ -27,7 +27,9 @@ hw::Potentiometer::~Potentiometer(void)
 uint8_t hw::Potentiometer::update(void)
 {
 	// Calculate percent
-	this->percent = util::interpolate(this->ain_ch->last_read, this->low_deadzone, this->high_deadzone, 0, 100);
+	if(this->ain_ch->last_read <= this->low_deadzone) this->percent = 0;
+	else if(this->ain_ch->last_read >= this->high_deadzone ) this->percent = 100;
+	else this->percent = util::interpolate(this->ain_ch->last_read, this->low_deadzone, this->high_deadzone, 0, 100);
 	
 	return this->percent;
 }