diff --git a/manifests/init.pp b/manifests/init.pp
index c6f128b45e65f03b39aa9b9722d6c4c786254843..363db911693701ee1ad88118b183aaaad093a69e 100644
--- a/manifests/init.pp
+++ b/manifests/init.pp
@@ -57,6 +57,15 @@ class aes {
     group => root,
   }
 
+  # File containing which environment is used.
+  file { '/var/puppet_environment' :
+    ensure => file,
+    mode   => '0644',
+    owner  => root,
+    group  => root,
+    content => "${environment}"
+  }
+
   ::users::liu_user { 'klaar36':
     commonname => 'Klas Arvidsson',
     shell      => '/bin/bash',