diff --git a/src/machine/board_teensy40.go b/src/machine/board_teensy40.go
index 52904841..792c0d3d 100644
--- a/src/machine/board_teensy40.go
+++ b/src/machine/board_teensy40.go
@@ -136,6 +136,7 @@ const (
 )
 
 var (
+	UART0 = &UART1 // alias UART0 to UART1
 	UART1 = UART{
 		Bus:      nxp.LPUART6,
 		Buffer:   NewRingBuffer(),