diff --git a/src/Protocol/OStatus.php b/src/Protocol/OStatus.php
index 3b3775c1e..e84dddcea 100644
--- a/src/Protocol/OStatus.php
+++ b/src/Protocol/OStatus.php
@@ -1940,10 +1940,10 @@ class OStatus
 		$mentioned = [];
 
 		if (($item['parent'] != $item['id']) || ($item['parent-uri'] !== $item['uri']) || (($item['thr-parent'] !== '') && ($item['thr-parent'] !== $item['uri']))) {
-			$parent = item::selectFirst(['guid', 'author-link', 'owner-link'], ['id' => $item["parent"]]);
+			$parent = Item::selectFirst(['guid', 'author-link', 'owner-link'], ['id' => $item["parent"]]);
 			$parent_item = (($item['thr-parent']) ? $item['thr-parent'] : $item['parent-uri']);
 
-			$thrparent = item::selectFirst(['guid', 'author-link', 'owner-link', 'plink'], ['uid' => $owner["uid"], 'uri' => $parent_item]);
+			$thrparent = Item::selectFirst(['guid', 'author-link', 'owner-link', 'plink'], ['uid' => $owner["uid"], 'uri' => $parent_item]);
 
 			if (DBM::is_result($thrparent)) {
 				$mentioned[$thrparent["author-link"]] = $thrparent["author-link"];