diff --git a/mpbackup b/mpbackup
index 6eb04a9..c4904bd 100644
--- a/mpbackup
+++ b/mpbackup
@@ -67,7 +67,7 @@ def do_backup(config)
 
   if config.dig('forget', 'enable')
     puts 'Forgetting unnecessary snapshots …'
-    flags = config['forget'].filter{|k,v| k != 'enable'}
+    flags = config['forget'].select{|k,v| k != 'enable'}
     flags = flags.flat_map{|k,v| ['--' + k, v.to_s]}
     forget_command = ['restic', 'forget'] + flags
     puts("Command: #{forget_command.join(' ')}")