diff --git a/boards/cubepilot/cubeorange/default.cmake b/boards/cubepilot/cubeorange/default.cmake
index e85a8eafbb..c235f134e0 100644
--- a/boards/cubepilot/cubeorange/default.cmake
+++ b/boards/cubepilot/cubeorange/default.cmake
@@ -12,7 +12,7 @@ px4_add_board(
 		TEL2:/dev/ttyS1
 		GPS1:/dev/ttyS2
 		# PX4IO:/dev/ttyS3
-		TEL3:/dev/ttyS4
+		# TEL3:/dev/ttyS4  # connected to ADS-B receiver
 		GPS2:/dev/ttyS5
 	DRIVERS
 		adc/ads1115