diff --git a/manifests/merger.pp b/manifests/merger.pp
index a28e2fa..b7873a6 100644
--- a/manifests/merger.pp
+++ b/manifests/merger.pp
@@ -16,9 +16,11 @@
 # == Class: zuul::merger
 #
 class zuul::merger (
+  $ensure = undef,
   $manage_log_conf = true,
 ) {
   service { 'zuul-merger':
+    ensure     => $ensure,
     name       => 'zuul-merger',
     enable     => true,
     hasrestart => true,
diff --git a/manifests/server.pp b/manifests/server.pp
index 59aa489..1975f11 100644
--- a/manifests/server.pp
+++ b/manifests/server.pp
@@ -16,10 +16,12 @@
 # == Class: zuul::server
 #
 class zuul::server (
+  $ensure = undef,
   $layout_dir = '',
   $manage_log_conf = true,
 ) {
   service { 'zuul':
+    ensure     => $ensure,
     name       => 'zuul',
     enable     => true,
     hasrestart => true,