diff --git a/CHANGELOG.md b/CHANGELOG.md
index b86b42a18..2bc5c0059 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -26,6 +26,7 @@
 - Some enhancements in default template [\#1312](https://github.com/torrentpier/torrentpier/pull/1312) ([belomaxorka](https://github.com/belomaxorka))
 - Some enhancements in default template (Part 2) [\#1322](https://github.com/torrentpier/torrentpier/pull/1322) ([belomaxorka](https://github.com/belomaxorka))
 - Set response code in some cases [\#1319](https://github.com/torrentpier/torrentpier/pull/1319) ([belomaxorka](https://github.com/belomaxorka))
+- Fixed `admin_terms.php` textarea reset in preview mode [\#1371](https://github.com/torrentpier/torrentpier/pull/1371) ([belomaxorka](https://github.com/belomaxorka))
 - Fixed broken user dl status [\#1351](https://github.com/torrentpier/torrentpier/pull/1351) ([belomaxorka](https://github.com/belomaxorka))
 - Fixed auth(): empty $f_access [\#1329](https://github.com/torrentpier/torrentpier/pull/1329) ([belomaxorka](https://github.com/belomaxorka))
 - Fixed download counter for torrents [\#1346](https://github.com/torrentpier/torrentpier/pull/1346) ([belomaxorka](https://github.com/belomaxorka))
diff --git a/admin/admin_terms.php b/admin/admin_terms.php
index b48138d6b..7f0c92e39 100644
--- a/admin/admin_terms.php
+++ b/admin/admin_terms.php
@@ -15,7 +15,9 @@ if (!empty($setmodules)) {
 require __DIR__ . '/pagestart.php';
 require INC_DIR . '/bbcode.php';
 
-if (isset($_POST['post']) && $bb_cfg['terms'] != $_POST['message']) {
+$preview = isset($_POST['preview']);
+
+if (isset($_POST['post']) && ($bb_cfg['terms'] !== $_POST['message'])) {
     bb_update_config(['terms' => $_POST['message']]);
     bb_die($lang['CONFIG_UPDATED']);
 }
@@ -23,8 +25,8 @@ if (isset($_POST['post']) && $bb_cfg['terms'] != $_POST['message']) {
 $template->assign_vars([
     'S_ACTION' => 'admin_terms.php',
     'EXT_LINK_NW' => $bb_cfg['ext_link_new_win'],
-    'MESSAGE' => $bb_cfg['terms'] ?: '',
-    'PREVIEW_HTML' => isset($_REQUEST['preview']) ? bbcode2html($_POST['message']) : '',
+    'MESSAGE' => $preview ? $_POST['message'] : $bb_cfg['terms'],
+    'PREVIEW_HTML' => $preview ? bbcode2html($_POST['message']) : '',
 ]);
 
 print_page('admin_terms.tpl', 'admin');