diff --git a/src/Worker/Delivery.php b/src/Worker/Delivery.php
index 1a0758987a..195f9fdcab 100644
--- a/src/Worker/Delivery.php
+++ b/src/Worker/Delivery.php
@@ -213,7 +213,7 @@ class Delivery
 		// Also transmit via Diaspora if this is a direct answer to a Diaspora comment.
 		// This is done since the uri wouldn't match (Diaspora doesn't transmit it)
 		// Also transmit relayed posts from Diaspora contacts via Diaspora.
-		if (($contact['network'] != Protocol::DIASPORA) && in_array(Protocol::DIASPORA, [$parent['network'] ?? '', $thr_parent['network'] ?? '', $target_item['network']] ?? '')) {
+		if (($contact['network'] != Protocol::DIASPORA) && in_array(Protocol::DIASPORA, [$parent['network'] ?? '', $thr_parent['network'] ?? '', $target_item['network'] ?? ''])) {
 			Logger::info('Enforcing the Diaspora protocol', ['id' => $contact['id'], 'network' => $contact['network'], 'parent' => $parent['network'], 'thread-parent' => $thr_parent['network'], 'post' => $target_item['network']]);
 			$contact['network'] = Protocol::DIASPORA;
 		}