diff --git a/zfs-backup-mm b/zfs-backup-mm
index 84f9072..f5f3eaf 100755
--- a/zfs-backup-mm
+++ b/zfs-backup-mm
@@ -52,7 +52,7 @@ if [ $backup_server_delete_old_snaps = "y" ]; then
 for dataset in $source_datasets;
 do
 dataset_clean=$(echo $dataset | grep -o '[^/]*$')
-snaps_to_delete=$(echo "$backups_server_zfs_snapshots" | grep "$backup_server_dataset"/"$dataset_clean"@ | grep -E "....-..-.._........--"$zfsnap_days_keep_snaps"d" | head -n -"$zfsnap_days_keep_snaps" | cut -d" " -f1)
+snaps_to_delete=$(echo "$backups_server_zfs_snapshots" | grep "$backup_server_dataset"/"$dataset_clean"@ | grep -E "....-..-.._........--"$zfsnap_days_keep_snaps"d" | head -n -"$backup_server_number_keep_snaps" | cut -d" " -f1)
 
 for snap in $snaps_to_delete
 do