diff --git a/boards/px4/fmu-v2/lpe.cmake b/boards/px4/fmu-v2/lpe.cmake
index 3c8fd1430c..179416e12b 100644
--- a/boards/px4/fmu-v2/lpe.cmake
+++ b/boards/px4/fmu-v2/lpe.cmake
@@ -13,10 +13,10 @@ px4_add_board(
 	#UAVCAN_INTERFACES 2
 
 	SERIAL_PORTS
-		GPS1:/dev/ttyS0
+		GPS1:/dev/ttyS3
 		TEL1:/dev/ttyS1
 		TEL2:/dev/ttyS2
-		TEL4:/dev/ttyS3
+		TEL4:/dev/ttyS6
 
 	DRIVERS
 		#barometer # all available barometer drivers