diff --git a/plugins/c13y_upgrade/language/nn_NO/description.txt b/plugins/c13y_upgrade/language/nn_NO/description.txt
new file mode 100755
index 000000000..e45ba0c95
--- /dev/null
+++ b/plugins/c13y_upgrade/language/nn_NO/description.txt
@@ -0,0 +1 @@
+Sjekk integriteten av ein oppgradering.
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diff --git a/plugins/c13y_upgrade/language/nn_NO/plugin.lang.php b/plugins/c13y_upgrade/language/nn_NO/plugin.lang.php
new file mode 100755
index 000000000..d8ccf9470
--- /dev/null
+++ b/plugins/c13y_upgrade/language/nn_NO/plugin.lang.php
@@ -0,0 +1,28 @@
+<?php
+// +-----------------------------------------------------------------------+
+// | Piwigo - a PHP based photo gallery                                    |
+// +-----------------------------------------------------------------------+
+// | Copyright(C) 2008-2013 Piwigo Team                  http://piwigo.org |
+// | Copyright(C) 2003-2008 PhpWebGallery Team    http://phpwebgallery.net |
+// | Copyright(C) 2002-2003 Pierrick LE GALL   http://le-gall.net/pierrick |
+// +-----------------------------------------------------------------------+
+// | This program is free software; you can redistribute it and/or modify  |
+// | it under the terms of the GNU General Public License as published by  |
+// | the Free Software Foundation                                          |
+// |                                                                       |
+// | This program is distributed in the hope that it will be useful, but   |
+// | WITHOUT ANY WARRANTY; without even the implied warranty of            |
+// | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU      |
+// | General Public License for more details.                              |
+// |                                                                       |
+// | You should have received a copy of the GNU General Public License     |
+// | along with this program; if not, write to the Free Software           |
+// | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
+// | USA.                                                                  |
+// +-----------------------------------------------------------------------+
+$lang['c13y_correction_dbl_email_user'] = 'Slett duplikat-brukarar';
+$lang['c13y_correction_obsolete_plugin'] = '"%s" tilleggsprogrammet er ikkje støtta i denne versjonen og du må avinnstallere det.';
+$lang['c13y_dbl_email_user'] = 'Brukarar med same e-postadresse';
+$lang['c13y_obsolete_plugin'] = 'Utgjenge tilleggsprogram';
+$lang['c13y_upgrade_no_anomaly'] = 'Ingen feil oppdaga etter oppgradering. Tilleggsprogrammet "Check upgrades" vart deaktivert.';
+?>
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