diff --git a/mpbackup b/mpbackup
index 967ed67..6eb04a9 100644
--- a/mpbackup
+++ b/mpbackup
@@ -65,17 +65,19 @@ def do_backup(config)
     exit 1
   end
 
-  puts "Deleting unnecessary snapshots …"
-  flags = config['forget'].filter{|k,v| k != 'enable'}
-  flags = flags.flat_map{|k,v| ['--' + k, v.to_s]}
-  forget_command = ['restic', 'forget'] + flags
-  puts("Command: #{forget_command.join(' ')}")
-  system(*forget_command)
-  # Data will only be deleted when `restic prune` is executed or when
-  # `restic forget` is called with `--prune`.
-  if $?.exitstatus > 0
-    STDERR.puts "Forgetting snapshots failed."
-    exit 1
+  if config.dig('forget', 'enable')
+    puts 'Forgetting unnecessary snapshots …'
+    flags = config['forget'].filter{|k,v| k != 'enable'}
+    flags = flags.flat_map{|k,v| ['--' + k, v.to_s]}
+    forget_command = ['restic', 'forget'] + flags
+    puts("Command: #{forget_command.join(' ')}")
+    system(*forget_command)
+    # Data will only be deleted when `restic prune` is executed or when
+    # `restic forget` is called with `--prune`.
+    if $?.exitstatus > 0
+      STDERR.puts "Forgetting snapshots failed."
+      exit 1
+    end
   end
 
   ENV.delete('RESTIC_REPOSITORY')