diff -Naur k9copy.orig/po/ca.po k9copy/po/ca.po
--- k9copy.orig/po/ca.po	2014-09-29 11:00:12.000000000 -0400
+++ k9copy/po/ca.po	2020-12-24 10:48:11.122907577 -0500
@@ -12,6 +12,7 @@
 "PO-Revision-Date: 2006-09-06 19:13+0200\n"
 "Last-Translator: Daniel Balagué Guardia <bullet@k-demar.org>\n"
 "Language-Team: Català <ca@li.org>\n"
+"Language: ca\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
diff -Naur k9copy.orig/po/cs.po k9copy/po/cs.po
--- k9copy.orig/po/cs.po	2014-09-29 11:00:12.000000000 -0400
+++ k9copy/po/cs.po	2020-12-24 10:48:11.123907586 -0500
@@ -13,6 +13,7 @@
 "PO-Revision-Date: 2004-01-01 00:36+0100\n"
 "Last-Translator: \n"
 "Language-Team: Czech <kde-i18n-doc@kde.org>\n"
+"Language: cs\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
diff -Naur k9copy.orig/po/da.po k9copy/po/da.po
--- k9copy.orig/po/da.po	2014-09-29 11:00:12.000000000 -0400
+++ k9copy/po/da.po	2020-12-24 10:48:11.125907603 -0500
@@ -11,6 +11,7 @@
 "PO-Revision-Date: 2010-05-12 14:26+0200\n"
 "Last-Translator: Martin Schlander <mschlander@opensuse.org>\n"
 "Language-Team: Danish <opensuse-translation@opensuse.org>\n"
+"Language: da\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
diff -Naur k9copy.orig/po/de.po k9copy/po/de.po
--- k9copy.orig/po/de.po	2014-09-29 11:00:12.000000000 -0400
+++ k9copy/po/de.po	2020-12-24 10:48:11.126907611 -0500
@@ -11,6 +11,7 @@
 "PO-Revision-Date: 2009-06-12 14:13+0200\n"
 "Last-Translator: Jan Berndt <Jan.Berndt@gmx.de>\n"
 "Language-Team: deutsch <de@li.org>\n"
+"Language: de\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
diff -Naur k9copy.orig/po/el.po k9copy/po/el.po
--- k9copy.orig/po/el.po	2014-09-29 11:00:12.000000000 -0400
+++ k9copy/po/el.po	2020-12-24 10:48:11.127907620 -0500
@@ -13,6 +13,7 @@
 "PO-Revision-Date: 2007-10-17 11:33+0300\n"
 "Last-Translator: Spiros Georgaras <sng@hellug.gr>\n"
 "Language-Team: Greek <i18ngr@lists.hellug.gr>\n"
+"Language: el\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
diff -Naur k9copy.orig/po/es.po k9copy/po/es.po
--- k9copy.orig/po/es.po	2014-09-29 11:00:12.000000000 -0400
+++ k9copy/po/es.po	2020-12-24 10:48:11.127907620 -0500
@@ -12,6 +12,7 @@
 "PO-Revision-Date: 2006-09-06 19:11+0200\n"
 "Last-Translator: Daniel Balagué Guardia <bullet@k-demar.org>\n"
 "Language-Team: Català <ca@li.org>\n"
+"Language: es\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
diff -Naur k9copy.orig/po/es_AR.po k9copy/po/es_AR.po
--- k9copy.orig/po/es_AR.po	2014-09-29 11:00:12.000000000 -0400
+++ k9copy/po/es_AR.po	2020-12-24 10:48:11.128907629 -0500
@@ -10,6 +10,7 @@
 "PO-Revision-Date: 2008-04-30 03:57-0300\n"
 "Last-Translator: Fernando Toledo <ftoledo@docksud.com.ar>\n"
 "Language-Team: Español (Argentina) <es@li.org>\n"
+"Language: es_AR\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
diff -Naur k9copy.orig/po/fr.po k9copy/po/fr.po
--- k9copy.orig/po/fr.po	2014-09-29 11:00:12.000000000 -0400
+++ k9copy/po/fr.po	2020-12-24 10:48:11.128907629 -0500
@@ -9,6 +9,7 @@
 "PO-Revision-Date: 2007-07-24 09:24+0200\n"
 "Last-Translator: Jean-Michel Petit <k9copy@free.fr>\n"
 "Language-Team:  <fr@li.org>\n"
+"Language: fr\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
diff -Naur k9copy.orig/po/it.po k9copy/po/it.po
--- k9copy.orig/po/it.po	2014-09-29 11:00:12.000000000 -0400
+++ k9copy/po/it.po	2020-12-24 10:48:11.129907637 -0500
@@ -15,6 +15,7 @@
 "PO-Revision-Date: 2008-03-25 18:47+0100\n"
 "Last-Translator: Leonardo Finetti <finex@finex.org>\n"
 "Language-Team: italian <kde-i18n-it@kde.org>\n"
+"Language: it\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
diff -Naur k9copy.orig/po/ja.po k9copy/po/ja.po
--- k9copy.orig/po/ja.po	2014-09-29 11:00:12.000000000 -0400
+++ k9copy/po/ja.po	2020-12-24 10:48:11.129907637 -0500
@@ -12,6 +12,7 @@
 "PO-Revision-Date: 2010-07-11 10:17+0900\n"
 "Last-Translator: Munehiro Yamamoto <munepixyz@gmail.com>\n"
 "Language-Team: munepi <munepixyz@gmail.com>\n"
+"Language: ja\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: \n"
diff -Naur k9copy.orig/po/k9copy.pot k9copy/po/k9copy.pot
--- k9copy.orig/po/k9copy.pot	2014-09-29 11:00:12.000000000 -0400
+++ k9copy/po/k9copy.pot	2020-12-24 10:48:11.130907646 -0500
@@ -13,6 +13,7 @@
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
+"Language: en\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=CHARSET\n"
 "Content-Transfer-Encoding: 8bit\n"
diff -Naur k9copy.orig/po/nl.po k9copy/po/nl.po
--- k9copy.orig/po/nl.po	2014-09-29 11:00:12.000000000 -0400
+++ k9copy/po/nl.po	2020-12-24 10:48:11.130907646 -0500
@@ -11,6 +11,7 @@
 "PO-Revision-Date: 2009-05-10 16:15+0200\n"
 "Last-Translator: \n"
 "Language-Team: Dutch <kde-i18n-doc@kde.org>\n"
+"Language: nl\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
diff -Naur k9copy.orig/po/pl.po k9copy/po/pl.po
--- k9copy.orig/po/pl.po	2014-09-29 11:00:12.000000000 -0400
+++ k9copy/po/pl.po	2020-12-24 10:48:11.130907646 -0500
@@ -13,6 +13,7 @@
 "PO-Revision-Date: 2006-09-27 11:51+0200\n"
 "Last-Translator: Wojciech Nawrocki <wojtasin@o2.pl>\n"
 "Language-Team: Polski <pl@li.org>\n"
+"Language: pl\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
diff -Naur k9copy.orig/po/pt_BR.po k9copy/po/pt_BR.po
--- k9copy.orig/po/pt_BR.po	2014-09-29 11:00:12.000000000 -0400
+++ k9copy/po/pt_BR.po	2020-12-24 10:48:11.131907655 -0500
@@ -14,6 +14,7 @@
 "PO-Revision-Date: 2010-02-08 21:04-0200\n"
 "Last-Translator: Phantom X <megaphantomx at bol.com.br>\n"
 "Language-Team: Português do Brasil <pt@li.org>\n"
+"Language: pt_BR\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
diff -Naur k9copy.orig/po/ru.po k9copy/po/ru.po
--- k9copy.orig/po/ru.po	2014-09-29 11:00:12.000000000 -0400
+++ k9copy/po/ru.po	2020-12-24 10:48:11.133907672 -0500
@@ -11,6 +11,7 @@
 "PO-Revision-Date: 2010-01-01 17:32+0000\n"
 "Last-Translator: kostya_hm <kostya.hm@rambler.ru>\n"
 "Language-Team: Russian <none>\n"
+"Language: ru\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
diff -Naur k9copy.orig/po/sr.po k9copy/po/sr.po
--- k9copy.orig/po/sr.po	2014-09-29 11:00:12.000000000 -0400
+++ k9copy/po/sr.po	2020-12-24 10:48:11.133907672 -0500
@@ -14,6 +14,7 @@
 "PO-Revision-Date: 2007-08-15 11:15+0100\n"
 "Last-Translator: Милош Поповић <gpopac@gmail.com>\n"
 "Language-Team: Serbian <gnom@prevod.org>\n"
+"Language: sr\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
diff -Naur k9copy.orig/po/sr@Latn.po k9copy/po/sr@Latn.po
--- k9copy.orig/po/sr@Latn.po	2014-09-29 11:00:12.000000000 -0400
+++ k9copy/po/sr@Latn.po	2020-12-24 10:48:11.135907689 -0500
@@ -14,6 +14,7 @@
 "PO-Revision-Date: 2007-08-15 11:15+0100\n"
 "Last-Translator: Miloš Popović <gpopac@gmail.com>\n"
 "Language-Team: Serbian <gnom@prevod.org>\n"
+"Language: sr@Latn\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
diff -Naur k9copy.orig/po/tr.po k9copy/po/tr.po
--- k9copy.orig/po/tr.po	2014-09-29 11:00:12.000000000 -0400
+++ k9copy/po/tr.po	2020-12-24 10:48:11.136907698 -0500
@@ -14,6 +14,7 @@
 "PO-Revision-Date: 2007-10-17 11:01+0300\n"
 "Last-Translator: Murat Şenel <muratasenel@gmail.com>\n"
 "Language-Team:  <tr@li.org>\n"
+"Language: tr\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
diff -Naur k9copy.orig/po/uk.po k9copy/po/uk.po
--- k9copy.orig/po/uk.po	2014-09-29 11:00:12.000000000 -0400
+++ k9copy/po/uk.po	2020-12-24 10:48:11.137907707 -0500
@@ -11,7 +11,7 @@
 "PO-Revision-Date: 2011-07-24 12:18+0300\n"
 "Last-Translator: Yuri Chornoivan <yurchor@ukr.net>\n"
 "Language-Team: Ukrainian <kde-i18n-uk@kde.org>\n"
-"Language: \n"
+"Language: uk\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
diff -Naur k9copy.orig/po/zh_TW.po k9copy/po/zh_TW.po
--- k9copy.orig/po/zh_TW.po	2014-09-29 11:00:12.000000000 -0400
+++ k9copy/po/zh_TW.po	2020-12-24 10:48:11.137907707 -0500
@@ -12,6 +12,7 @@
 "PO-Revision-Date: 2007-10-24 19:43+0800\n"
 "Last-Translator: 洪任諭 <pcman.tw@gmail.com>\n"
 "Language-Team: Traditional Chinese <LL@li.org>\n"
+"Language: zh_TW\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=utf-8\n"
 "Content-Transfer-Encoding: 8bit\n"