--- a/scannr.py
+++ b/scannr.py
@@ -80,7 +80,10 @@
 dispatcher.connect( worker, signal='FILE_CREATED', sender=dispatcher.Any )
 
 print "Opening serial port..."
-ser = serial.Serial('COM20', 112500, timeout=1) 
+if sys.platform.startswith('darwin'):
+	ser = serial.Serial('/dev/tty.usbserial-FTB3VL83', 112500, timeout=1) 
+elif sys.platform.startswith('win32'):
+	ser = serial.Serial('COM20', 112500, timeout=1) 
 print "Loading notifymyandroid..."
 nma = pynma.PyNMA( "a6f50f76119eda33befe4325b4b9e1dd25eef7bad2868e4f")    
 print "Connecting database..."
@@ -90,3 +93,4 @@
     print "ready to record again"
     record_to_async_file()
 ser.close()
+