diff --git a/config.php-dist b/config.php-dist
index eed1a699d..cd0ee0078 100644
--- a/config.php-dist
+++ b/config.php-dist
@@ -89,23 +89,6 @@
 	// intervals is disabled and all articles (which are not starred)
 	// older than this amount of days are purged.
 
-	// ***********************************
-	// *** Self-registrations by users ***
-	// ***********************************
-
-	define('ENABLE_REGISTRATION', false);
-	// Allow users to register themselves. Please be aware that allowing
-	// random people to access your tt-rss installation is a security risk
-	// and potentially might lead to data loss or server exploit. Disabled
-	// by default.
-
-	define('REG_NOTIFY_ADDRESS', 'user@your.domain.dom');
-	// Email address to send new user notifications to.
-
-	define('REG_MAX_USERS', 10);
-	// Maximum amount of users which will be allowed to register on this
-	// system. 0 - no limit.
-
 	// **********************************
 	// *** Cookies and login sessions ***
 	// **********************************
diff --git a/include/login_form.php b/include/login_form.php
index f3f5d448e..aec305b13 100755
--- a/include/login_form.php
+++ b/include/login_form.php
@@ -177,13 +177,7 @@
 
 			<fieldset class="align-right">
 				<label> </label>
-
 				<button dojoType="dijit.form.Button" type="submit" class="alt-primary"><?php echo __('Log in') ?></button>
-
-				<?php if (defined('ENABLE_REGISTRATION') && ENABLE_REGISTRATION) { ?>
-					<button onclick="return UtilityApp.gotoRegForm()" dojoType="dijit.form.Button">
-						<?php echo __("Create new account") ?></button>
-				<?php } ?>
 			</fieldset>
 
 		</form>
diff --git a/include/sanity_config.php b/include/sanity_config.php
index e13eb2cd0..7aa4f6b0f 100644
--- a/include/sanity_config.php
+++ b/include/sanity_config.php
@@ -1,3 +1,3 @@
-<?php # This file has been generated at:  Fri Dec 11 09:30:20 MSK 2020
+<?php # This file has been generated at:  Fri Feb 12 15:56:39 MSK 2021
 define('GENERATED_CONFIG_CHECK', 26);
-$required_defines = array( 'DB_TYPE', 'DB_HOST', 'DB_USER', 'DB_NAME', 'DB_PASS', 'MYSQL_CHARSET', 'SELF_URL_PATH', 'SINGLE_USER_MODE', 'SIMPLE_UPDATE_MODE', 'PHP_EXECUTABLE', 'LOCK_DIRECTORY', 'CACHE_DIR', 'ICONS_DIR', 'ICONS_URL', 'AUTH_AUTO_CREATE', 'AUTH_AUTO_LOGIN', 'FORCE_ARTICLE_PURGE', 'ENABLE_REGISTRATION', 'REG_NOTIFY_ADDRESS', 'REG_MAX_USERS', 'SESSION_COOKIE_LIFETIME', 'SMTP_FROM_NAME', 'SMTP_FROM_ADDRESS', 'DIGEST_SUBJECT', 'CHECK_FOR_UPDATES', 'ENABLE_GZIP_OUTPUT', 'PLUGINS', 'LOG_DESTINATION', 'CONFIG_VERSION'); ?>
+$required_defines = array( 'DB_TYPE', 'DB_HOST', 'DB_USER', 'DB_NAME', 'DB_PASS', 'MYSQL_CHARSET', 'SELF_URL_PATH', 'SINGLE_USER_MODE', 'SIMPLE_UPDATE_MODE', 'PHP_EXECUTABLE', 'LOCK_DIRECTORY', 'CACHE_DIR', 'ICONS_DIR', 'ICONS_URL', 'AUTH_AUTO_CREATE', 'AUTH_AUTO_LOGIN', 'FORCE_ARTICLE_PURGE', 'SESSION_COOKIE_LIFETIME', 'SMTP_FROM_NAME', 'SMTP_FROM_ADDRESS', 'DIGEST_SUBJECT', 'CHECK_FOR_UPDATES', 'ENABLE_GZIP_OUTPUT', 'PLUGINS', 'LOG_DESTINATION', 'CONFIG_VERSION'); ?>
diff --git a/register.php b/register.php
deleted file mode 100644
index dde3f2d8d..000000000
--- a/register.php
+++ /dev/null
@@ -1,354 +0,0 @@
-<?php
-	// This file uses two additional include files:
-	//
-	// 1) templates/register_notice.txt - displayed above the registration form
-	// 2) register_expire_do.php - contains user expiration queries when necessary
-
-	set_include_path(dirname(__FILE__) ."/include" . PATH_SEPARATOR .
-		get_include_path());
-
-	require_once "autoload.php";
-	require_once "functions.php";
-	require_once "sessions.php";
-	require_once "sanity_check.php";
-	require_once "config.php";
-	require_once "db.php";
-
-	startup_gettext();
-
-	$action = $_REQUEST["action"];
-
-	if (!init_plugins()) return;
-
-	if ($_REQUEST["format"] == "feed") {
-		header("Content-Type: text/xml");
-
-		print '<?xml version="1.0" encoding="utf-8"?>';
-		print "<feed xmlns=\"http://www.w3.org/2005/Atom\">
-			<id>".htmlspecialchars(SELF_URL_PATH . "/register.php")."</id>
-			<title>Tiny Tiny RSS registration slots</title>
-			<link rel=\"self\" href=\"".htmlspecialchars(SELF_URL_PATH . "/register.php?format=feed")."\"/>
-			<link rel=\"alternate\" href=\"".htmlspecialchars(SELF_URL_PATH)."\"/>";
-
-		if (ENABLE_REGISTRATION) {
-			$result = db_query( "SELECT COUNT(*) AS cu FROM ttrss_users");
-			$num_users = db_fetch_result($result, 0, "cu");
-
-			$num_users = REG_MAX_USERS - $num_users;
-			if ($num_users < 0) $num_users = 0;
-			$reg_suffix = "enabled";
-		} else {
-			$num_users = 0;
-			$reg_suffix = "disabled";
-		}
-
-		print "<entry>
-			<id>".htmlspecialchars(SELF_URL_PATH)."/register.php?$num_users"."</id>
-			<link rel=\"alternate\" href=\"".htmlspecialchars(SELF_URL_PATH . "/register.php")."\"/>";
-
-		print "<title>$num_users slots are currently available, registration $reg_suffix</title>";
-		print "<summary>$num_users slots are currently available, registration $reg_suffix</summary>";
-
-		print "</entry>";
-
-		print "</feed>";
-
-		return;
-	}
-
-	/* Remove users which didn't login after receiving their registration information */
-
-	if (DB_TYPE == "pgsql") {
-		db_query( "DELETE FROM ttrss_users WHERE last_login IS NULL
-				AND created < NOW() - INTERVAL '1 day' AND access_level = 0");
-	} else {
-		db_query( "DELETE FROM ttrss_users WHERE last_login IS NULL
-				AND created < DATE_SUB(NOW(), INTERVAL 1 DAY) AND access_level = 0");
-	}
-
-	if (file_exists("register_expire_do.php")) {
-		require_once "register_expire_do.php";
-	}
-
-	if ($action == "check") {
-		header("Content-Type: application/xml");
-
-		$login = clean($_REQUEST['login']);
-		$is_registered = UserHelper::find_user_by_login($login);
-
-		print "<result>";
-
-		printf("%d", $is_registered);
-
-		print "</result>";
-
-		return;
-	}
-?>
-<!DOCTYPE html>
-<html>
-<head>
-<title>Create new account</title>
-<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
-<?php echo stylesheet_tag("themes/light.css") ?>
-<?php echo javascript_tag("js/common.js") ?>
-<?php echo javascript_tag("lib/prototype.js") ?>
-<?php echo javascript_tag("lib/scriptaculous/scriptaculous.js?load=effects,controls") ?>
-<?php if (theme_exists(LOCAL_OVERRIDE_STYLESHEET)) {
-		echo stylesheet_tag(get_theme_path(LOCAL_OVERRIDE_STYLESHEET));
-} ?>
-</head>
-
-<script type="text/javascript">
-
-	function checkUsername() {
-
-		try {
-			var f = document.forms['register_form'];
-			var login = f.login.value;
-
-			if (login == "") {
-				new Effect.Highlight(f.login);
-				f.sub_btn.disabled = true;
-				return false;
-			}
-
-			var query = "register.php?action=check&login=" +
-					encodeURIComponent(login);
-
-			new Ajax.Request(query, {
-				onComplete: function(transport) {
-
-					try {
-
-						var reply = transport.responseXML;
-
-						var result = reply.getElementsByTagName('result')[0];
-						var result_code = result.firstChild.nodeValue;
-
-						if (result_code == 0) {
-							new Effect.Highlight(f.login, {startcolor : '#00ff00'});
-							f.sub_btn.disabled = false;
-						} else {
-							new Effect.Highlight(f.login, {startcolor : '#ff0000'});
-							f.sub_btn.disabled = true;
-						}
-					} catch (e) {
-						App.Error.report(e);
-					}
-
-				} });
-
-		} catch (e) {
-			App.Error.report(e);
-		}
-
-		return false;
-
-	}
-
-	function validateRegForm() {
-		try {
-
-			var f = document.forms['register_form'];
-
-			if (f.login.value.length == 0) {
-				new Effect.Highlight(f.login);
-				return false;
-			}
-
-			if (f.email.value.length == 0) {
-				new Effect.Highlight(f.email);
-				return false;
-			}
-
-			if (f.turing_test.value.length == 0) {
-				new Effect.Highlight(f.turing_test);
-				return false;
-			}
-
-			return true;
-
-		} catch (e) {
-			alert(e.stack);
-			return false;
-		}
-	}
-
-</script>
-
-<body class="claro ttrss_utility">
-
-<h1><?php echo __("Create new account") ?></h1>
-
-<div class="content">
-
-<?php
-		if (!ENABLE_REGISTRATION) {
-			print_error(__("New user registrations are administratively disabled."));
-
-			print "<p><form method=\"GET\" action=\"backend.php\">
-				<input type=\"hidden\" name=\"op\" value=\"logout\">
-				<input type=\"submit\" value=\"".__("Return to Tiny Tiny RSS")."\">
-				</form>";
-			return;
-		}
-?>
-
-<?php if (REG_MAX_USERS > 0) {
-		$result = db_query( "SELECT COUNT(*) AS cu FROM ttrss_users");
-		$num_users = db_fetch_result($result, 0, "cu");
-} ?>
-
-<?php if (!REG_MAX_USERS || $num_users < REG_MAX_USERS) { ?>
-
-	<!-- If you have any rules or ToS you'd like to display, enter them here -->
-
-	<?php	if (file_exists("templates/register_notice.txt")) {
-			require_once "templates/register_notice.txt";
-	} ?>
-
-	<?php if (!$action) { ?>
-
-	<p><?php echo __('Your temporary password will be sent to the specified email. Accounts, which were not logged in once, are erased automatically 24 hours after temporary password is sent.') ?></p>
-
-	<form action="register.php" method="POST" name="register_form">
-	<input type="hidden" name="action" value="do_register">
-	<table>
-	<tr>
-	<td><?php echo __('Desired login:') ?></td><td>
-		<input name="login" required>
-	</td><td>
-		<input type="submit" value="<?php echo __('Check availability') ?>" onclick='return checkUsername()'>
-	</td></tr>
-	<tr><td><?php echo __('Email:') ?></td><td>
-		<input name="email" type="email" required>
-	</td></tr>
-	<tr><td><?php echo __('How much is two plus two:') ?></td><td>
-		<input name="turing_test" required></td></tr>
-	<tr><td colspan="2" align="right">
-	<input type="submit" name="sub_btn" value="<?php echo __('Submit registration') ?>"
-			disabled="disabled" onclick='return validateRegForm()'>
-	</td></tr>
-	</table>
-	</form>
-
-	<?php print "<p><form method=\"GET\" action=\"index.php\">
-				<input type=\"submit\" value=\"".__("Return to Tiny Tiny RSS")."\">
-				</form>"; ?>
-
-	<?php } else if ($action == "do_register") { ?>
-
-	<?php
-		$login = mb_strtolower(trim(db_escape_string( $_REQUEST["login"])));
-		$email = trim(db_escape_string( $_REQUEST["email"]));
-		$test = trim(db_escape_string( $_REQUEST["turing_test"]));
-
-		if (!$login || !$email || !$test) {
-			print_error(__("Your registration information is incomplete."));
-			print "<p><form method=\"GET\" action=\"index.php\">
-				<input type=\"submit\" value=\"".__("Return to Tiny Tiny RSS")."\">
-				</form>";
-			return;
-		}
-
-		if ($test == "four" || $test == "4") {
-
-			$is_registered = UserHelper::find_user_by_login($login);
-
-			if ($is_registered) {
-				print_error(__('Sorry, this username is already taken.'));
-				print "<p><form method=\"GET\" action=\"index.php\">
-				<input type=\"submit\" value=\"".__("Return to Tiny Tiny RSS")."\">
-				</form>";
-			} else {
-
-				$password = make_password();
-
-				$salt = substr(bin2hex(get_random_bytes(125)), 0, 250);
-				$pwd_hash = encrypt_password($password, $salt, true);
-
-				db_query( "INSERT INTO ttrss_users
-					(login,pwd_hash,access_level,last_login, email, created, salt)
-					VALUES (LOWER('$login'), '$pwd_hash', 0, null, '$email', NOW(), '$salt')");
-
-				$new_uid = UserHelper::find_user_by_login($login);
-
-				if (!$new_uid) {
-					print_error(__('Registration failed.'));
-					print "<p><form method=\"GET\" action=\"index.php\">
-					<input type=\"submit\" value=\"".__("Return to Tiny Tiny RSS")."\">
-					</form>";
-				} else {
-					Pref_Users::initialize_user($new_uid);
-
-					$reg_text = "Hi!\n".
-						"\n".
-						"You are receiving this message, because you (or somebody else) have opened\n".
-						"an account at Tiny Tiny RSS.\n".
-						"\n".
-						"Your login information is as follows:\n".
-						"\n".
-						"Login: $login\n".
-						"Password: $password\n".
-						"\n".
-						"Don't forget to login at least once to your new account, otherwise\n".
-						"it will be deleted in 24 hours.\n".
-						"\n".
-						"If that wasn't you, just ignore this message. Thanks.";
-
-					$mailer = new Mailer();
-					$rc = $mailer->mail(["to_address" => $email,
-						"subject" => "Registration information for Tiny Tiny RSS",
-						"message" => $reg_text]);
-
-					if (!$rc) print_error($mailer->error());
-
-					$reg_text = "Hi!\n".
-						"\n".
-						"New user had registered at your Tiny Tiny RSS installation.\n".
-						"\n".
-						"Login: $login\n".
-						"Email: $email\n";
-
-					$mailer = new Mailer();
-					$rc = $mailer->mail(["to_address" => REG_NOTIFY_ADDRESS,
-						"subject" => "Registration notice for Tiny Tiny RSS",
-						"message" => $reg_text]);
-
-					if (!$rc) print_error($mailer->error());
-
-					print_notice(__("Account created successfully."));
-
-					print "<p><form method=\"GET\" action=\"index.php\">
-					<input type=\"submit\" value=\"".__("Return to Tiny Tiny RSS")."\">
-					</form>";
-
-				}
-
-			}
-
-			} else {
-				print_error('Plese check the form again, you have failed the robot test.');
-				print "<p><form method=\"GET\" action=\"index.php\">
-				<input type=\"submit\" value=\"".__("Return to Tiny Tiny RSS")."\">
-				</form>";
-
-			}
-		}
-	?>
-
-<?php } else { ?>
-
-	<?php print_notice(__('New user registrations are currently closed.')) ?>
-
-	<?php print "<p><form method=\"GET\" action=\"index.php\">
-				<input type=\"submit\" value=\"".__("Return to Tiny Tiny RSS")."\">
-				</form>"; ?>
-
-<?php } ?>
-
-	</div>
-
-</body>
-</html>