diff --git a/src/Model/Contact.php b/src/Model/Contact.php
index 3ca84515a..17be0b0cf 100644
--- a/src/Model/Contact.php
+++ b/src/Model/Contact.php
@@ -799,7 +799,7 @@ class Contact
 			return false;
 		}
 
-		$fields = ['uid', 'nickname', 'page-flags', 'account-type', 'prvkey', 'pubkey'];
+		$fields = ['uid', 'username', 'nickname', 'page-flags', 'account-type', 'prvkey', 'pubkey'];
 		$user = DBA::selectFirst('user', $fields, ['uid' => $uid, 'account_expired' => false]);
 		if (!DBA::isResult($user)) {
 			return false;
@@ -818,7 +818,7 @@ class Contact
 		$url = DI::baseUrl() . '/profile/' . $user['nickname'];
 
 		$fields = [
-			'name'         => $profile['name'],
+			'name'         => $user['username'],
 			'nick'         => $user['nickname'],
 			'avatar-date'  => $self['avatar-date'],
 			'location'     => Profile::formatLocation($profile),
@@ -841,7 +841,6 @@ class Contact
 			'confirm'      => DI::baseUrl() . '/dfrn_confirm/' . $user['nickname'],
 		];
 
-
 		$avatar = Photo::selectFirst(['resource-id', 'type'], ['uid' => $uid, 'profile' => true]);
 		if (DBA::isResult($avatar)) {
 			if ($update_avatar) {
diff --git a/src/Module/Notifications/Ping.php b/src/Module/Notifications/Ping.php
index 120035d55..e54bd577b 100644
--- a/src/Module/Notifications/Ping.php
+++ b/src/Module/Notifications/Ping.php
@@ -52,6 +52,7 @@ use Friendica\Network\HTTPException;
 use Friendica\Protocol\Activity;
 use Friendica\Util\DateTimeFormat;
 use Friendica\Util\Profiler;
+use Friendica\Util\Strings;
 use GuzzleHttp\Psr7\Uri;
 use Psr\Log\LoggerInterface;
 
@@ -296,8 +297,8 @@ class Ping extends BaseModule
 		$data['notifications'] = $navNotifications;
 
 		$data['sysmsgs'] = [
-			'notice' => $this->systemMessages->flushNotices(),
-			'info'   => $this->systemMessages->flushInfos(),
+			'notice' => array_map([Strings::class, 'escapeHtml'], $this->systemMessages->flushNotices()),
+			'info'   => array_map([Strings::class, 'escapeHtml'], $this->systemMessages->flushInfos()),
 		];
 
 		if (isset($_GET['callback'])) {
diff --git a/src/Module/Profile/Conversations.php b/src/Module/Profile/Conversations.php
index b53c2d1ab..cda8f03f9 100644
--- a/src/Module/Profile/Conversations.php
+++ b/src/Module/Profile/Conversations.php
@@ -103,10 +103,10 @@ class Conversations extends BaseProfile
 			$this->page['htmlhead'] .= '<meta content="noindex, noarchive" name="robots" />' . "\n";
 		}
 
-		$this->page['htmlhead'] .= '<link rel="alternate" type="application/atom+xml" href="' . $this->baseUrl . '/dfrn_poll/' . $this->parameters['nickname'] . '" title="DFRN: ' . $this->t('%s\'s timeline', $profile['name']) . '"/>' . "\n";
-		$this->page['htmlhead'] .= '<link rel="alternate" type="application/atom+xml" href="' . $this->baseUrl . '/feed/' . $this->parameters['nickname'] . '/" title="' . $this->t('%s\'s posts', $profile['name']) . '"/>' . "\n";
-		$this->page['htmlhead'] .= '<link rel="alternate" type="application/atom+xml" href="' . $this->baseUrl . '/feed/' . $this->parameters['nickname'] . '/comments" title="' . $this->t('%s\'s comments', $profile['name']) . '"/>' . "\n";
-		$this->page['htmlhead'] .= '<link rel="alternate" type="application/atom+xml" href="' . $this->baseUrl . '/feed/' . $this->parameters['nickname'] . '/activity" title="' . $this->t('%s\'s timeline', $profile['name']) . '"/>' . "\n";
+		$this->page['htmlhead'] .= '<link rel="alternate" type="application/atom+xml" href="' . $this->baseUrl . '/dfrn_poll/' . $this->parameters['nickname'] . '" title="DFRN: ' . $this->t('%s\'s timeline', Strings::escapeHtml($profile['name'])) . '"/>' . "\n";
+		$this->page['htmlhead'] .= '<link rel="alternate" type="application/atom+xml" href="' . $this->baseUrl . '/feed/' . $this->parameters['nickname'] . '/" title="' . $this->t('%s\'s posts', Strings::escapeHtml($profile['name'])) . '"/>' . "\n";
+		$this->page['htmlhead'] .= '<link rel="alternate" type="application/atom+xml" href="' . $this->baseUrl . '/feed/' . $this->parameters['nickname'] . '/comments" title="' . $this->t('%s\'s comments', Strings::escapeHtml($profile['name'])) . '"/>' . "\n";
+		$this->page['htmlhead'] .= '<link rel="alternate" type="application/atom+xml" href="' . $this->baseUrl . '/feed/' . $this->parameters['nickname'] . '/activity" title="' . $this->t('%s\'s timeline', Strings::escapeHtml($profile['name'])) . '"/>' . "\n";
 
 		$category = $datequery = $datequery2 = '';