diff --git a/light_sensor.py b/light_sensor.py
index 8c28a41..b42dd45 100644
--- a/light_sensor.py
+++ b/light_sensor.py
@@ -11,6 +11,7 @@
 
 #define the pin that goes to the circuit
 pin_to_circuit = 7
+max_count = 100000
 
 def rc_time (pin_to_circuit):
     count = 0
@@ -26,6 +27,8 @@ def rc_time (pin_to_circuit):
     #Count until the pin goes high
     while (GPIO.input(pin_to_circuit) == GPIO.LOW):
         count += 1
+        if count == max_count:
+            break
 
     return count