diff --git a/cubesatsim/cubesatsim.ino b/cubesatsim/cubesatsim.ino
index 7101d540..98531a74 100644
--- a/cubesatsim/cubesatsim.ino
+++ b/cubesatsim/cubesatsim.ino
@@ -3613,8 +3613,8 @@ void config_gpio() {
   pinMode(PI_3V3_PIN, INPUT); 	
   Serial.print("Pi 3.3V: ");
   Serial.println(digitalRead(PI_3V3_PIN));
-//  if (digitalRead(PI_3V3_PIN) == HIGH)  {
- {
+  if (digitalRead(PI_3V3_PIN) == HIGH)  {
+// {
     Serial.print("Pi Zero present, so running Payload OK code instead of CubeSatSim code.");
     start_payload();	
     while(true)	 {