diff --git a/manifests/backup.pp b/manifests/backup.pp
index 87ff9cc..d89cf3a 100644
--- a/manifests/backup.pp
+++ b/manifests/backup.pp
@@ -1,166 +1,180 @@
 # == Defined Type: dar::backup
 #
 # dar::backup creates a local backup with dar. The basename of the backup
 #
 # === Parameters
 #
 # [*backup_storage*]
 #   The target directory for backups (default: '/srv/backups')
 #
 # [*flag_dir*]
 #   The directory in which we create the flag file when backups are done inside $backup_storage (default: 'backups_done')
 #
 # [*lock_dir*]
 #   The directory where we store locks for backups inside $backup_storage (default: 'locks')
 #
 # [*config_dir*]
 #   The directory where we store config files for backups inside $backup_storage (default: 'config')
 #
 # [*hour*]
 #   Passed to the cron specification for the backup (optional)
 #
 # [*minute*]
 #   Passed to the cron specification for the backup (optional)
 #
 # [*month*]
 #   Passed to the cron specification for the backup (optional)
 #
 # [*monthday*]
 #   Passed to the cron specification for the backup (optional)
 #
 # [*weekday*]
 #   Passed to the cron specification for the backup (optional)
 #
 # [*keep_backups*]
 #   The number of backups to keep (default: 1)
 #
 # [*backup_base*]
 #   The base directory to backup
 #
 # [*backup_selection*]
 #   The folders to backup (optional, array)
 #
 # [*backup_exclusion*]
 #   The folders to exclude (optional, array)
 #
 # [*backup_options*]
 #   Extra options to pass to dar (optional, string)
 #
 # === Examples
 #
 #  dar::backup {'root':
 #    target_dir => '/srv/local-backups',
 
 #  }
 #
 # === Authors
 #
 # Nicolas Dandrimont <nicolas@dandrimont.eu>
 #
 # === Copyright
 #
 # Copyright 2015 Nicolas Dandrimont
 #
 
 define dar::backup (
   $backup_storage   = '/srv/backups',
   $flag_dir         = 'backups_done',
   $lock_dir         = 'locks',
   $config_dir       = 'config',
   $hour             = undef,
   $minute           = undef,
   $month            = undef,
   $monthday         = undef,
   $weekday          = undef,
   $keep_backups     = 1,
   $backup_base      = '/',
   $backup_selection = [],
   $backup_exclusion = [],
   $backup_options   = [],
-  ) {
+) {
 
   include dar
 
   validate_absolute_path($backup_storage)
   validate_string($flag_dir)
   validate_string($lock_dir)
   validate_string($config_dir)
   validate_integer($keep_backups, undef, 1)
   validate_absolute_path($backup_base)
 
   $real_flag_dir   = "${backup_storage}/${flag_dir}"
   $real_lock_dir   = "${backup_storage}/${lock_dir}"
   $real_config_dir = "${backup_storage}/${config_dir}"
 
   $flag_path     = "${real_flag_dir}/${title}"
   $lock_path     = "${real_lock_dir}/${title}"
   $log_path      = "/var/log/dar/${title}.log"
   $config_path   = "${real_config_dir}/${title}.config"
   $includes_path = "${real_config_dir}/${title}.includes"
   $excludes_path = "${real_config_dir}/${title}.excludes"
 
+  $fixed_backup_exclusion = $backup_exclusion.map |$excl| {
+    case $excl[0] {
+      '/': { $excl[1,-1] }
+      default: { $excl }
+    }
+  }
+
+  $fixed_backup_selection = $backup_selection.map |$sel| {
+    case $sel[0] {
+      '/': { $sel[1,-1] }
+      default: { $sel }
+    }
+  }
+
   file { $backup_storage:
     ensure => directory,
     owner  => 'root',
     group  => 'root',
     mode   => '0600',
   }
 
   file { [
       $real_flag_dir,
       $real_lock_dir,
       $real_config_dir,
     ]:
     ensure  => directory,
     owner   => 'root',
     group   => 'root',
     mode    => '0600',
     require => File[$backup_storage],
   }
 
   cron { "dar.${title}":
     ensure   => present,
     user     => 'root',
     command  => "/usr/bin/chronic bash -c 'set -eo pipefail; /usr/local/bin/swh-dar-backup ${config_path} 2>&1 | tee -a ${log_path}'",
     hour     => $hour,
     minute   => $minute,
     month    => $month,
     monthday => $monthday,
     weekday  => $weekday,
     require  => [
       File['/usr/local/bin/swh-dar-backup'],
       File[$config_path],
       File['/var/log/dar'],
       Package['moreutils'],
     ],
   }
 
   file { $config_path:
     ensure  => present,
     owner   => 'root',
     group   => 'root',
     mode    => '0600',
     content => template('dar/config.erb'),
     require => [
       File[$real_config_dir],
       File[$includes_path],
       File[$excludes_path],
     ],
   }
 
   file { $includes_path:
     ensure  => present,
     owner   => 'root',
     group   => 'root',
     mode    => '0600',
     content => template('dar/include.erb'),
   }
 
   file { $excludes_path:
     ensure  => present,
     owner   => 'root',
     group   => 'root',
     mode    => '0600',
     content => template('dar/exclude.erb'),
   }
 }
diff --git a/templates/exclude.erb b/templates/exclude.erb
index bc6258d..11f60a7 100644
--- a/templates/exclude.erb
+++ b/templates/exclude.erb
@@ -1,8 +1,8 @@
 # Excludes for backup <%= @title %>
 # Managed by puppet. Your modifications will be overwritten
 
 BACKUP_EXCLUDE_OPTIONS=(
-<% @backup_exclusion.each do |exclude| -%>
+<% @fixed_backup_exclusion.each do |exclude| -%>
 -P <%= exclude.shellescape %>
 <% end -%>
 )
diff --git a/templates/include.erb b/templates/include.erb
index 8d61e6c..a278f7c 100644
--- a/templates/include.erb
+++ b/templates/include.erb
@@ -1,8 +1,8 @@
 # Includes for backup <%= @title %>
 # Managed by puppet. Your modifications will be overwritten
 
 BACKUP_INCLUDE_OPTIONS=(
-<% @backup_selection.each do |selection| -%>
+<% @fixed_backup_selection.each do |selection| -%>
 -g <%= selection.shellescape %>
 <% end -%>
 )