diff --git a/libraries/AP_HAL_ChibiOS/hwdef/CubePilot-PPPGW/hwdef.dat b/libraries/AP_HAL_ChibiOS/hwdef/CubePilot-PPPGW/hwdef.dat
index 5954143088bc4..23599e2d24860 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/CubePilot-PPPGW/hwdef.dat
+++ b/libraries/AP_HAL_ChibiOS/hwdef/CubePilot-PPPGW/hwdef.dat
@@ -7,7 +7,7 @@ undef PE1
 # need to use UART8 to get RTS/CTS
 PE1 UART8_TX UART8
 PE0 UART8_RX UART8
-PA10 UART8_RTS_GPIO UART8
+PA10 UART8_RTS UART8
 PC11 UART8_CTS_GPIO UART8
 
 SERIAL_ORDER OTG1 UART8