diff --git a/nuttx/configs/px4fmu/nsh/defconfig b/nuttx/configs/px4fmu/nsh/defconfig
index 89322daf98..3118c998f4 100755
--- a/nuttx/configs/px4fmu/nsh/defconfig
+++ b/nuttx/configs/px4fmu/nsh/defconfig
@@ -285,7 +285,7 @@ CONFIG_USART4_2STOP=0
 CONFIG_USART5_2STOP=0
 CONFIG_USART6_2STOP=0
 
-CONFIG_USART1_RXDMA=n
+CONFIG_USART1_RXDMA=y
 CONFIG_USART2_RXDMA=y
 CONFIG_USART3_RXDMA=n
 CONFIG_USART4_RXDMA=n