diff --git a/backup-zfs b/backup-zfs
index 32c988c..e7cf38c 100755
--- a/backup-zfs
+++ b/backup-zfs
@@ -120,14 +120,14 @@ last="$(ZFS "$desthost" list -d 1 -t snapshot -H -S creation -o name $destfs/$sr
 # 1st time: send full snapshot
 if [[ -z $last ]] ; then
 	log "sending full recursive snapshot from $src to $dest"
-	ZFS "$srchost" send -R "$cur" | ZFS "$desthost" receive -Fud "$destfs"
+	ZFS "$srchost" send -R "$cur" | ZFS "$desthost" receive -Fue "$destfs"
 # special case: tagged snapshots exist on dest, but src has rotated through all
 elif ! ZFS "$srchost" list $srcfs@$last &>/dev/null ; then
 	die 1 "no incremental path from from $src to $dest"
 # normal case: send incremental
 else
 	log "sending incremental snapshot from $src to $dest (${last#${tag}_}..${cur#*@${tag}_})"
-	ZFS "$srchost" send -R -I "$last" "$cur" | ZFS "$desthost" receive -Fud "$destfs"
+	ZFS "$srchost" send -R -I "$last" "$cur" | ZFS "$desthost" receive -Fue "$destfs"
 fi
 
 ###