diff --git a/README.md b/README.md
index a8db9d1..bd44b49 100644
--- a/README.md
+++ b/README.md
@@ -48,4 +48,4 @@
 
 Device Ids are the UDIDs of the iOS devices. From the command line, you can list device ids [this way](http://javierhz.blogspot.com/2012/06/how-to-get-udid-of-iphone-using-shell.html):
 
-        system_profiler SPUSBDataType | sed -n -e '/iPad/,/Serial/p' -e '/iPhone/,/Serial/p' | grep "Serial Number:" | awk -F ": " '{print $2}'
+        system_profiler SPUSBDataType | sed -n -e '/iPod/,/Serial/p' | sed -n -e '/iPad/,/Serial/p' -e '/iPhone/,/Serial/p' | grep "Serial Number:" | awk -F ": " '{print $2}'