diff --git a/site-modules/profile/manifests/swh/deploy/worker/instance.pp b/site-modules/profile/manifests/swh/deploy/worker/instance.pp
index f5164fdc..589c2a8e 100644
--- a/site-modules/profile/manifests/swh/deploy/worker/instance.pp
+++ b/site-modules/profile/manifests/swh/deploy/worker/instance.pp
@@ -1,69 +1,69 @@
 # Instance of a worker
 define profile::swh::deploy::worker::instance (
   $ensure = present,
-  $max_tasks_per_child = 5,
   $instance_name = $title,
   $sentry_name = $title,
   $limit_no_file = undef,
   $private_tmp = undef,
   $merge_policy = 'deep',
 )
 {
   include ::profile::swh::deploy::worker::base
 
   $service_basename = "swh-worker@${instance_name}"
   $service_name = "${service_basename}.service"
   $concurrency = lookup("swh::deploy::worker::${instance_name}::concurrency")
+  $max_tasks_per_child = lookup("swh::deploy::worker::${instance_name}::max_tasks_per_child", Integer, first, 5)
   $loglevel = lookup("swh::deploy::worker::${instance_name}::loglevel")
   $config_file = lookup("swh::deploy::worker::${instance_name}::config_file")
   $config = lookup("swh::deploy::worker::${instance_name}::config", Hash, $merge_policy)
 
   $sentry_dsn = lookup("swh::deploy::${sentry_name}::sentry_dsn", Optional[String], 'first', undef)
   $sentry_environment = lookup("swh::deploy::${sentry_name}::sentry_environment", Optional[String], 'first', undef)
   $sentry_swh_package = lookup("swh::deploy::${sentry_name}::sentry_swh_package", Optional[String], 'first', undef)
 
   case $ensure {
     'present', 'running': {
       # Uses variables
       # - $concurrency
       # - $loglevel
       # - $max_tasks_per_child
       # - $sentry_{dsn,environment,swh_package}
       ::systemd::dropin_file {"${service_basename}/parameters.conf":
         ensure   => present,
         unit     => $service_name,
         filename => 'parameters.conf',
         content  => template('profile/swh/deploy/worker/parameters.conf.erb'),
       }
 
       file {$config_file:
         ensure  => 'present',
         owner   => 'swhworker',
         group   => 'swhworker',
         mode    => '0644',
         content => inline_template("<%= @config.to_yaml %>\n"),
       }
 
       if $ensure == 'running' {
         $service_ensure = 'running'
       } else {
         $service_ensure = undef
       }
 
       service {$service_basename:
         ensure  => $service_ensure,
         enable  => true,
         require => [
           File[$config_file],
         ]
       }
     }
     default: {
       ::systemd::dropin_file {"${service_basename}/parameters.conf":
         ensure   => absent,
         unit     => $service_name,
         filename => 'parameters.conf',
       }
     }
   }
 }