Error message is written to stdout

[Removed by request]

I'm using Ubuntu 14.04 dev with e2fsprogs 1.42.9-3ubuntu1 and I have encountered an error message which is written to stdout. Here is the output:

root@ubuntu:~# e4defrag -c /var/cache/dictionaries-common/ispell-dicts-list.txt
 This file(/var/cache/dictionaries-common/ispell-dicts-list.txt) can't be defragmented.
 Done.
root@ubuntu:~# echo $?
1

If I'm forwarding now stdout I will get this:

root@ubuntu:~# e4defrag -c /var/cache/dictionaries-common/ispell-dicts-list.txt > /dev/null
root@ubuntu:~# echo $?
1

I think the message should be written to stderr instead of stdout.