diff --git a/files/usr/local/bin/mkbackup-btrfs b/files/usr/local/bin/mkbackup-btrfs
index 8905cc3..84916f6 100755
--- a/files/usr/local/bin/mkbackup-btrfs
+++ b/files/usr/local/bin/mkbackup-btrfs
@@ -231,9 +231,9 @@ class BtrfsListing:
         output = self.args.config.remotecommand(tag=self.args.tag, store=self.store, cmd=cmd)
         try:
             for line in output.splitlines():
-                # btrfs-subvolume list 4.13 output field separator is not anymore only one space. uuid-fields are filled up with whitespaces, so split(' ') does not work anymore!!!
+                # btrfs-subvolume list 4.13 output field separator is not anymore only one space. uuid-fields are filled up with whitespaces, so split(' ') does not work anymore!!!
                 #argmts = line.split(' ')
-                argmts = line.split()
+                argmts = line.split(' ')
                 #ID 2412 gen 8547 cgen 8547 top level 2393 parent_uuid 7991115b-8a6b-6d4d-b664-03db01e902d0 received_uuid - uuid 368490e7-5aca-0d4d-9b7a-becff0487ebd path aldebaran/__ALWAYSCURRENT__.2016-10-15_22:40:25.hourly.part/var-spool-dovecot
                 self.svols[argmts[1]] = dict() 
                 self.svols[argmts[1]]['id']    = argmts[1]