diff --git a/os/Makefile b/os/Makefile
index c0ed4fc0..7d80fdd8 100644
--- a/os/Makefile
+++ b/os/Makefile
@@ -19,7 +19,7 @@ else ifeq ($(BOARD), k210)
 endif
 
 # Run K210
-K210-SERIALPORT	= /dev/tty.usbserial-35525425B50
+K210-SERIALPORT	= /dev/ttyUSB0
 K210-BURNER		= ../tools/kflash.py
 
 # Binutils