diff --git a/nuttx-configs/px4fmu-v4/nsh/defconfig b/nuttx-configs/px4fmu-v4/nsh/defconfig
index cfe3de4403..0b653b9eb5 100644
--- a/nuttx-configs/px4fmu-v4/nsh/defconfig
+++ b/nuttx-configs/px4fmu-v4/nsh/defconfig
@@ -306,7 +306,7 @@ CONFIG_USART3_RXDMA=y
 CONFIG_UART4_RXDMA=y
 CONFIG_UART5_RXDMA=y
 # CONFIG_USART6_RS485 is not set
-# CONFIG_USART6_RXDMA is not set
+CONFIG_USART6_RXDMA=y
 # CONFIG_UART7_RS485 is not set
 CONFIG_UART7_RXDMA=y
 # CONFIG_UART8_RS485 is not set