diff --git a/src/Model/Item.php b/src/Model/Item.php
index 0a242aa058..89b81b99aa 100644
--- a/src/Model/Item.php
+++ b/src/Model/Item.php
@@ -3490,9 +3490,7 @@ class Item
 	 */
 	public static function getPlink($item)
 	{
-		$a = DI::app();
-
-		if ($a->user['nickname'] != "") {
+		if (local_user()) {
 			$ret = [
 				'href' => "display/" . $item['guid'],
 				'orig' => "display/" . $item['guid'],
@@ -3504,7 +3502,6 @@ class Item
 				$ret["href"] = DI::baseUrl()->remove($item['plink']);
 				$ret["title"] = DI::l10n()->t('link to source');
 			}
-
 		} elseif (!empty($item['plink']) && ($item['private'] != self::PRIVATE)) {
 			$ret = [
 				'href' => $item['plink'],
diff --git a/src/Protocol/OStatus.php b/src/Protocol/OStatus.php
index 411bdd63cb..a2181beeb3 100644
--- a/src/Protocol/OStatus.php
+++ b/src/Protocol/OStatus.php
@@ -2087,10 +2087,9 @@ class OStatus
 		$mentioned = $newmentions;
 
 		foreach ($mentioned as $mention) {
-			$condition = ['uid' => $owner['uid'], 'nurl' => Strings::normaliseLink($mention)];
-			$contact = DBA::selectFirst('contact', ['forum', 'prv', 'self', 'contact-type'], $condition);
-			if ($contact["forum"] || $contact["prv"] || ($owner['contact-type'] == Contact::TYPE_COMMUNITY) ||
-				($contact['self'] && ($owner['account-type'] == User::ACCOUNT_TYPE_COMMUNITY))) {
+			$contact = Contact::getDetailsByURL($mention, $owner['uid']);
+			if (!empty($contact) && ($contact["forum"] || $contact["prv"] || ($owner['contact-type'] == Contact::TYPE_COMMUNITY) ||
+				($contact['self'] && ($owner['account-type'] == User::ACCOUNT_TYPE_COMMUNITY)))) {
 				XML::addElement($doc, $entry, "link", "",
 					[
 						"rel" => "mentioned",