diff --git a/libvirt-zsh-backup.sh b/libvirt-zsh-backup.sh
index efd58a2..9dcbd36 100644
--- a/libvirt-zsh-backup.sh
+++ b/libvirt-zsh-backup.sh
@@ -73,7 +73,15 @@ done
 
 virsh snapshot-delete $VM $SNAPNAME --metadata
 
-zfs send "$SRCZFS"@"$SNAPNAME" | pv -L 500M | ssh $DESTHOST sudo zfs recv -F $DESTZFS
+SUCCESS=$(zfs get backup:success -H -o value $SRCZFS)
+if [[ $SUCCESS == "true" ]]
+then
+    LASTBACKUP=$(zfs get backup:date -H -o value $SRCZFS)
+    LASTSNAP="backup_$LASTBACKUP"
+    zfs send -i "$SRCZFS"@"$LASTSNAP" "$SRCZFS"@"$SNAPNAME" | pv -L 500M | ssh $DESTHOST sudo zfs recv -F $DESTZFS
+else
+    zfs send "$SRCZFS"@"$SNAPNAME" | pv -L 500M | ssh $DESTHOST sudo zfs recv -F $DESTZFS
+fi
 if [ $? -eq 0 ]
 then
     zfs set backup:success="true" $SRCZFS