diff --git a/README.md b/README.md
index cdad9ab..e684154 100644
--- a/README.md
+++ b/README.md
@@ -68,7 +68,7 @@ Example
 
 In this example we're going to backup a SmartOS machine called `smartos01` to our fileserver called `fs1`.
 
-Its important to choose a uniq and consistent backup name. In this case we name our backup: `smartos01_fs1`.
+Its important to choose a unique and consistent backup name. In this case we name our backup: `smartos01_fs1`.
 
 Select filesystems to backup
 ----------------------------
diff --git a/zfs_autobackup b/zfs_autobackup
index 686b968..58c116b 100755
--- a/zfs_autobackup
+++ b/zfs_autobackup
@@ -200,6 +200,8 @@ def zfs_get_snapshots(ssh_to, filesystems, backup_name):
         if ssh_to in test_snapshots:
             for filesystem in filesystems:
                 if filesystem in test_snapshots[ssh_to]:
+                    if not filesystem in ret:
+                        ret[filesystem]=[]
                     ret[filesystem].extend(test_snapshots[ssh_to][filesystem])
 
     return(ret)