diff --git a/install/lang/be/admin.php b/install/lang/be/admin.php
new file mode 100644
index 0000000000000..9d4758981ce4c
--- /dev/null
+++ b/install/lang/be/admin.php
@@ -0,0 +1,41 @@
+<?php
+// This file is part of Moodle - https://moodle.org/
+//
+// Moodle 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, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle 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 Moodle.  If not, see <https://www.gnu.org/licenses/>.
+
+/**
+ * Automatically generated strings for Moodle installer
+ *
+ * Do not edit this file manually! It contains just a subset of strings
+ * needed during the very first steps of installation. This file was
+ * generated automatically by export-installer.php (which is part of AMOS
+ * {@link http://docs.moodle.org/dev/Languages/AMOS}) using the
+ * list of strings defined in /install/stringnames.txt.
+ *
+ * @package   installer
+ * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+defined('MOODLE_INTERNAL') || die();
+
+$string['clianswerno'] = 'n';
+$string['cliansweryes'] = 'y';
+$string['cliincorrectvalueerror'] = 'Памылка, хібнае значэньне "{$a->value}" для "{$a->option}"';
+$string['cliincorrectvalueretry'] = 'Хібнае значэньне, калі ласка, паўтарыце';
+$string['clitypevalue'] = 'значэньне тыпа';
+$string['clitypevaluedefault'] = 'значэньне тыпа, націсьніце Enter для выкарыстаньня стандартнага значэньня ({$a})';
+$string['cliunknowoption'] = 'Нераспазнаныя опцыі:
+  {$a}
+Калі ласка, выкарыстайце опцыю --help.';
+$string['cliyesnoprompt'] = 'надрукуйце y (yes) ці n (n=no)';
diff --git a/install/lang/ru/admin.php b/install/lang/ru/admin.php
index c609d706fbb3e..89dadfca6244e 100644
--- a/install/lang/ru/admin.php
+++ b/install/lang/ru/admin.php
@@ -29,8 +29,8 @@
 
 defined('MOODLE_INTERNAL') || die();
 
-$string['clianswerno'] = 'нет';
-$string['cliansweryes'] = 'да';
+$string['clianswerno'] = 'n';
+$string['cliansweryes'] = 'y';
 $string['cliincorrectvalueerror'] = 'Ошибка, некорректное значение «{$a->value}» для «{$a->option}»';
 $string['cliincorrectvalueretry'] = 'Некорректное значение, пожалуйста, попробуйте заново';
 $string['clitypevalue'] = 'введите значение';