diff --git a/main.py b/main.py
index 86098e0..279cca9 100644
--- a/main.py
+++ b/main.py
@@ -1,7 +1,7 @@
 import time
 from machine import Pin
 
-Inverter_Pin = Pin(4, Pin.IN)
+Inverter_Pin = Pin(4, Pin.IN, Pin.PULL_UP)
 
 while True:
     print(Inverter_Pin.value())