diff --git a/install/lang/pl/admin.php b/install/lang/pl/admin.php
index c87bb8691a6..9815b4ea171 100644
--- a/install/lang/pl/admin.php
+++ b/install/lang/pl/admin.php
@@ -40,6 +40,6 @@ $string['cliunknowoption'] = 'Nieznana opcja:
   {$a}
 Proszę użyć pomocy.';
 $string['cliyesnoprompt'] = 'wpisz y (czyli tak) lub n (czyli nie)';
-$string['environmentrequireinstall'] = 'jest niezbędnę, żeby było zainstalowane/włączone';
+$string['environmentrequireinstall'] = 'jest niezbędne, aby było zainstalowane i włączone';
 $string['environmentrequireversion'] = 'wersja {$a->needed} jest niezbędna a ty używasz wersji {$a->current}';
 $string['upgradekeyset'] = 'Zaktualizuj klucz (pozostaw puste jeśli nie jest to skonfigurowane)';
diff --git a/install/lang/ro_wp/moodle.php b/install/lang/ro_wp/moodle.php
new file mode 100644
index 00000000000..ead9bd31949
--- /dev/null
+++ b/install/lang/ro_wp/moodle.php
@@ -0,0 +1,33 @@
+<?php
+
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Automatically generated strings for Moodle installer
+ *
+ * Do not edit this file manually! It contains just a subset of strings
+ * needed during the very first steps of installation. This file was
+ * generated automatically by export-installer.php (which is part of AMOS
+ * {@link http://docs.moodle.org/dev/Languages/AMOS}) using the
+ * list of strings defined in /install/stringnames.txt.
+ *
+ * @package   installer
+ * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+defined('MOODLE_INTERNAL') || die();
+
+$string['previous'] = 'Anterior';
diff --git a/install/lang/ta_lk/moodle.php b/install/lang/ta_lk/moodle.php
index de7a1f08e60..21bd28a4b07 100644
--- a/install/lang/ta_lk/moodle.php
+++ b/install/lang/ta_lk/moodle.php
@@ -31,6 +31,7 @@
 defined('MOODLE_INTERNAL') || die();
 
 $string['language'] = 'மொழி';
+$string['moodlelogo'] = 'Moodle சின்னம்';
 $string['next'] = 'அடுத்தது';
 $string['previous'] = 'முன்னைய';
 $string['reload'] = 'மீள ஏற்றுக';