diff --git a/nuttx-configs/auav-x21/nsh/defconfig b/nuttx-configs/auav-x21/nsh/defconfig
index 474704fbbd..3688815ec8 100644
--- a/nuttx-configs/auav-x21/nsh/defconfig
+++ b/nuttx-configs/auav-x21/nsh/defconfig
@@ -898,7 +898,7 @@ CONFIG_RAMTRON_SETSPEED=y
 # CONFIG_EEPROM is not set
 CONFIG_PIPES=y
 CONFIG_DEV_PIPE_MAXSIZE=1024
-CONFIG_DEV_PIPE_SIZE=1024
+CONFIG_DEV_PIPE_SIZE=70
 CONFIG_DEV_FIFO_SIZE=0
 # CONFIG_PM is not set
 # CONFIG_POWER is not set