diff --git a/README.md b/README.md
index 4b6bf46..ea92b8d 100644
--- a/README.md
+++ b/README.md
@@ -281,10 +281,10 @@ Connected via i2c
 
 ## NMEA XDR Output
 
-on USB-C port with baud rate 115200
+on USB-C port with baud rate 38400
 
 ````
-stty -F /dev/ttyACM1 115200
+stty -F /dev/ttyACM1 38400
 socat stdio /dev/ttyACM1
 ````