diff --git a/resources/lang/de_DE/config.php b/resources/lang/de_DE/config.php
index c522918cb9..0983e84c5c 100644
--- a/resources/lang/de_DE/config.php
+++ b/resources/lang/de_DE/config.php
@@ -21,6 +21,7 @@
 declare(strict_types=1);
 
 return [
+    'html_language' => 'de',
     'locale'        => 'de, Deutsch, de_DE, de_DE.utf8, de_DE.UTF-8',
     'month'         => '%B %Y',
     'month_and_day' => '%e. %B %Y',
diff --git a/resources/lang/fr_FR/config.php b/resources/lang/fr_FR/config.php
index 6d11dc4bad..e672331dc5 100644
--- a/resources/lang/fr_FR/config.php
+++ b/resources/lang/fr_FR/config.php
@@ -21,6 +21,7 @@
 declare(strict_types=1);
 
 return [
+    'html_language' => 'fr',
     'locale'        => 'fr, French, fr_FR, fr_FR.utf8, fr_FR.UTF-8',
     'month'         => '%B %Y',
     'month_and_day' => '%e %B %Y',
diff --git a/resources/lang/id_ID/config.php b/resources/lang/id_ID/config.php
index e83657ebbd..2fd4ff1ecc 100644
--- a/resources/lang/id_ID/config.php
+++ b/resources/lang/id_ID/config.php
@@ -21,6 +21,7 @@
 declare(strict_types=1);
 
 return [
+    'html_language' => 'id',
     'locale'        => 'id, Bahasa Indonesia, id_ID, id_ID.utf8, id_ID.UTF-8',
     'month'         => '%B %Y',
     'month_and_day' => '%e %B %Y',
diff --git a/resources/lang/nl_NL/config.php b/resources/lang/nl_NL/config.php
index 0379439ef2..c1cd4dd746 100644
--- a/resources/lang/nl_NL/config.php
+++ b/resources/lang/nl_NL/config.php
@@ -21,6 +21,7 @@
 declare(strict_types=1);
 
 return [
+    'html_language' => 'nl',
     'locale'        => 'nl, Dutch, nl_NL, nl_NL.utf8, nl_NL.UTF-8',
     'month'         => '%B %Y',
     'month_and_day' => '%e %B %Y',
diff --git a/resources/lang/ru_RU/config.php b/resources/lang/ru_RU/config.php
index 7120cee150..96f821b89b 100644
--- a/resources/lang/ru_RU/config.php
+++ b/resources/lang/ru_RU/config.php
@@ -21,6 +21,7 @@
 declare(strict_types=1);
 
 return [
+    'html_language' => 'ru',
     'locale'        => 'ru, Russian, ru_RU, ru_RU.utf8, ru_RU.UTF-8',
     'month'         => '%B %Y',
     'month_and_day' => '%e %B %Y',
diff --git a/resources/lang/tr_TR/config.php b/resources/lang/tr_TR/config.php
index 4f2ceb7fc1..d3812f72e2 100644
--- a/resources/lang/tr_TR/config.php
+++ b/resources/lang/tr_TR/config.php
@@ -21,6 +21,7 @@
 declare(strict_types=1);
 
 return [
+    'html_language' => 'tr',
     'locale'        => 'tr, Turkish, tr_TR, tr_TR.utf8, tr_TR.S.UTF-8',
     'month'         => '%B %Y',
     'month_and_day' => '%e %B %Y',