diff --git a/Koha/Manual.pm b/Koha/Manual.pm
index 078c57a865..a5b16bfe5b 100644
--- a/Koha/Manual.pm
+++ b/Koha/Manual.pm
@@ -57,7 +57,7 @@ Use system preferences 'KohaManualLanguage' and 'KohaManualBaseURL' to properly
 sub _get_base_url {
     my ($preferred_language) = @_;
 
-    my @available_languages = qw( en ar cs es fr it pt_BR tz zh_TW );
+    my @available_languages = qw( el en ar cs es fr it pt_BR tz zh_TW );
 
     my ($language) = grep {
         my $preferred_short = substr $preferred_language, 0, 2;
diff --git a/installer/data/mysql/atomicupdate/bug_41332.pl b/installer/data/mysql/atomicupdate/bug_41332.pl
new file mode 100644
index 0000000000..3cdfa6e7ee
--- /dev/null
+++ b/installer/data/mysql/atomicupdate/bug_41332.pl
@@ -0,0 +1,18 @@
+use Modern::Perl;
+use Koha::Installer::Output qw(say_warning say_success say_info);
+
+return {
+    bug_number  => "41332",
+    description => "Adds new option for Greek (el) to system preference 'KohaManualLanguage'",
+    up          => sub {
+        my ($args) = @_;
+        my ( $dbh, $out ) = @$args{qw(dbh out)};
+
+        $dbh->do(
+            q{
+            UPDATE systempreferences SET options = 'el|en|ar|cs|de|es|fr|it|pt_BR|tr|zh_TW' WHERE variable = 'KohaManualLanguage'
+            }
+        );
+        say_success( $out, "Added new option for Greek (el) to system preference 'KohaManualLanguage'" );
+    },
+};
diff --git a/installer/data/mysql/mandatory/sysprefs.sql b/installer/data/mysql/mandatory/sysprefs.sql
index 734150ba93..5dd31ccbc4 100644
--- a/installer/data/mysql/mandatory/sysprefs.sql
+++ b/installer/data/mysql/mandatory/sysprefs.sql
@@ -380,7 +380,7 @@ INSERT INTO systempreferences ( `variable`, `value`, `options`, `explanation`, `
 ('JobsNotificationMethod','STOMP','polling|STOMP','Define the preferred job worker notification method','Choice'),
 ('KohaAdminEmailAddress','root@localhost','','Define the email address where patron modification requests are sent','free'),
 ('KohaManualBaseURL','https://koha-community.org/manual/','','Where is the Koha manual/documentation located?','Free'),
-('KohaManualLanguage','en','en|ar|cs|de|es|fr|it|pt_BR|tr|zh_TW','What is the language of the online manual you want to use?','Choice'),
+('KohaManualLanguage','en','el|en|ar|cs|de|es|fr|it|pt_BR|tr|zh_TW','What is the language of the online manual you want to use?','Choice'),
 ('LabelMARCView','standard','standard|economical','Define how a MARC record will display','Choice'),
 ('LanguageToUseOnMerge','',NULL,'If set, the authority field having the given language code in its $7 subfield will be used in the bibliographic record if it exists, rather than the first field. The code can be in a short, 2 characters long form (example: ba for latin) or in a long, 8 characters long form, with the short form in position 5 and 6 starting from 1 (example: ba0yba0y for latin). A list of available codes can be found here: https://documentation.abes.fr/sudoc/formats/unmb/DonneesCodees/CodesZone104.htm#$d. Please note that this feature is available only for UNIMARC.','Free'),
 ('LibraryName','','','Define the library name as displayed on the OPAC',''),
diff --git a/koha-tmpl/intranet-tmpl/prog/en/modules/admin/preferences/enhanced_content.pref b/koha-tmpl/intranet-tmpl/prog/en/modules/admin/preferences/enhanced_content.pref
index 1f088136f4..903f02de41 100644
--- a/koha-tmpl/intranet-tmpl/prog/en/modules/admin/preferences/enhanced_content.pref
+++ b/koha-tmpl/intranet-tmpl/prog/en/modules/admin/preferences/enhanced_content.pref
@@ -422,6 +422,7 @@ Enhanced content:
             - Language of the online manual
             - pref: KohaManualLanguage
               choices:
+                el: Greek
                 en: English
                 ar: Arabic
                 cs: Czech