diff --git a/libraries/AP_HAL_ChibiOS/hwdef/CubeNode-ETH/hwdef.dat b/libraries/AP_HAL_ChibiOS/hwdef/CubeNode-ETH/hwdef.dat
index b31cf596f2..6da6a16c7a 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/CubeNode-ETH/hwdef.dat
+++ b/libraries/AP_HAL_ChibiOS/hwdef/CubeNode-ETH/hwdef.dat
@@ -3,6 +3,8 @@ include ../CubeNode/hwdef.dat
 # we need RTS/CTS for the PPP link
 undef PE0
 undef PE1
+undef PC11
+undef HAL_PERIPH_ENABLE_IMU
 
 # need to use UART8 to get RTS/CTS
 PE1 UART8_TX UART8