diff --git a/nuttx-configs/px4fmu-v2/nsh/defconfig b/nuttx-configs/px4fmu-v2/nsh/defconfig
index 372453fb6d..db7a9c5c4e 100644
--- a/nuttx-configs/px4fmu-v2/nsh/defconfig
+++ b/nuttx-configs/px4fmu-v2/nsh/defconfig
@@ -299,9 +299,10 @@ CONFIG_STM32_USART=y
 # CONFIG_USART2_RS485 is not set
 CONFIG_USART2_RXDMA=y
 # CONFIG_USART3_RS485 is not set
-# CONFIG_USART3_RXDMA is not set
+CONFIG_USART3_RXDMA=y
 # CONFIG_UART4_RS485 is not set
-# CONFIG_UART4_RXDMA is not set
+CONFIG_UART4_RXDMA=y
+# CONFIG_UART5_RXDMA is not set
 # CONFIG_USART6_RS485 is not set
 # CONFIG_USART6_RXDMA is not set
 # CONFIG_UART7_RS485 is not set