diff --git a/manifests/init.pp b/manifests/init.pp
index 2e7943b..3ceb609 100644
--- a/manifests/init.pp
+++ b/manifests/init.pp
@@ -195,11 +195,15 @@ class mastodon (
     ],
   }
   exec { 'install_mastodon':
-    command => '/usr/local/bin/install_mastodon.sh',
-    user    => $mastodon_user,
-    creates => "${mastodon_home}/./.mastodon_install",
-    path    => "${mastodon_home}/.rbenv/shims:${mastodon_home}/.rbenv/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
-    timeout => 0,
-    require => File['/usr/local/bin/install_mastodon.sh'],
+    command     => '/usr/local/bin/install_mastodon.sh',
+    user        => $mastodon_user,
+    group       => $mastodon_group,
+    environment => [
+      "HOME=${mastodon_home}",
+    ],
+    creates     => "${mastodon_home}/./.mastodon_install",
+    path        => "${mastodon_home}/.rbenv/shims:${mastodon_home}/.rbenv/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
+    timeout     => 0,
+    require     => File['/usr/local/bin/install_mastodon.sh'],
   }
 }