diff --git a/examples/SDdatalogger/datalogger.py b/examples/SDdatalogger/datalogger.py
index 6123db7d27..0690c20bb9 100644
--- a/examples/SDdatalogger/datalogger.py
+++ b/examples/SDdatalogger/datalogger.py
@@ -19,7 +19,7 @@ while True:
     if switch():
         pyb.delay(200)                      # delay avoids detection of multiple presses
         blue.on()                           # blue LED indicates file open
-        log = open('1:/log.csv', 'w')       # open file on SD (SD: '1:/', flash: '0/)
+        log = open('/sd/log.csv', 'w')       # open file on SD (SD: '/sd/', flash: '/flash/)
 
         # until switch is pressed again
         while not switch():