diff --git a/Labs/rmi-2223/C4XL-config.xml b/Labs/rmi-2223/C4XL-config.xml
index 78a56c2..ccdeeb4 100644
--- a/Labs/rmi-2223/C4XL-config.xml
+++ b/Labs/rmi-2223/C4XL-config.xml
@@ -2,7 +2,7 @@
 		CompassNoise="2" BeaconNoise="2" ObstacleNoise="0.1"
 		MotorsNoise="1.5" KeyTime="5000"
 		GPS="Off" GPSLinNoise="0.0" GPSDirNoise="0" 
-        LineSensorTrueProb="1.0"
+        LineSensorTrueProb="0.99"
 		BeaconSensor="Off" 
 		CompassSensor="On" 
 		ScoreSensor="Off" ShowActions="True" NBeacons="0"