diff --git a/apache/manifests/init.pp b/apache/manifests/init.pp
index 7944ca8..f0d350d 100644
--- a/apache/manifests/init.pp
+++ b/apache/manifests/init.pp
@@ -473,11 +473,34 @@ class apache::mod::auth_kerb {
 
 # Enable mod_auth_openid.
 #
+# Manual installation required, see:
+# http://findingscience.com/mod_auth_openid/
+# https://github.com/bmuller/mod_auth_openid
+#
 class apache::mod::auth_openid {
 
-    apache::configfile { "auth_openid.conf":
-        content => "LoadModule authopenid_module modules/mod_auth_openid.so\n",
-        http    => false,
+    case $::operatingsystem {
+        "debian","ubuntu": {
+            file { "/etc/apache2/mods-available/authopenid.load":
+                ensure  => present,
+                mode    => "0644",
+                owner   => "root",
+                group   => "root",
+                content => "LoadModule authopenid_module /usr/lib/apache2/modules/mod_auth_openid.so\n",
+            }
+            apache::debian::a2enmod { "authopenid":
+                require => File["/etc/apache2/mods-available/authopenid.load"],
+            }
+        }
+        "centos","redhat","fedora": {
+            apache::configfile { "auth_openid.conf":
+                content => "LoadModule authopenid_module modules/mod_auth_openid.so\n",
+                http    => false,
+            }
+        }
+        default: {
+            fail("Apache module not supported in ${::operatingsystem}.")
+        }
     }
 
 }