diff --git a/firmware/firmware.ino b/firmware/firmware.ino
index 36b97b1..1732972 100644
--- a/firmware/firmware.ino
+++ b/firmware/firmware.ino
@@ -120,6 +120,9 @@ void greenLEDOff() { digitalWrite(GREEN_LED_PIN, LED_OFF); }
 void redLEDOn() { digitalWrite(RED_LED_PIN, LED_ON); }
 void redLEDOff() { digitalWrite(RED_LED_PIN, LED_OFF); }
 
+void relayOn() { digitalWrite(RELAY_PIN, RELAY_CLOSED); }
+void relayOff() { digitalWrite(RELAY_PIN, RELAY_OPEN); }
+
 void processLockState()
 {
 	switch (lockState) {
@@ -127,7 +130,7 @@ void processLockState()
 			greenLEDOff();
 			redLEDOn();
 
-			digitalWrite(RELAY_PIN, RELAY_OPEN);
+			relayOff();
 			break;
 		case LOCK_PREARM:
 			if (!greenButton() && !redButton()) {
@@ -141,7 +144,7 @@ void processLockState()
 			greenLEDOff();
 			redLEDOn();
 
-			digitalWrite(RELAY_PIN, RELAY_OPEN);
+			relayOff();
 
 			if (redButton()) {
 				if (LOGGING) Serial.println("[INFO] Unarming interlock.");
@@ -164,7 +167,7 @@ void processLockState()
 			greenLEDOn();
 			redLEDOff();
 
-			digitalWrite(RELAY_PIN, RELAY_CLOSED);
+			relayOn();
 
 			if (redButton()) {
 				if (LOGGING) Serial.println("[INFO] Off button pressed.");