diff --git a/boards/mro/pixracerpro/default.px4board b/boards/mro/pixracerpro/default.px4board
index 401f42f36f..f6106d42af 100644
--- a/boards/mro/pixracerpro/default.px4board
+++ b/boards/mro/pixracerpro/default.px4board
@@ -1,8 +1,11 @@
 CONFIG_BOARD_TOOLCHAIN="arm-none-eabi"
 CONFIG_BOARD_ARCHITECTURE="cortex-m7"
 CONFIG_BOARD_SERIAL_GPS1="/dev/ttyS3"
+CONFIG_BOARD_SERIAL_GPS2="/dev/ttyS6"
 CONFIG_BOARD_SERIAL_TEL1="/dev/ttyS1"
 CONFIG_BOARD_SERIAL_TEL2="/dev/ttyS2"
+CONFIG_BOARD_SERIAL_TEL3="/dev/ttyS0"
+CONFIG_BOARD_SERIAL_TEL4="/dev/ttyS5"
 CONFIG_BOARD_PARAM_FILE="/fs/microsd/params"
 CONFIG_DRIVERS_ADC_ADS1115=y
 CONFIG_DRIVERS_ADC_BOARD_ADC=y