diff --git a/src/Model/APContact.php b/src/Model/APContact.php
index 863496dbb..cc84df4a5 100644
--- a/src/Model/APContact.php
+++ b/src/Model/APContact.php
@@ -235,7 +235,7 @@ class APContact
 		unset($parts['path']);
 
 		if (empty($apcontact['addr'])) {
-			if (!empty($apcontact['nick'])) {
+			if (!empty($apcontact['nick']) && is_array($parts)) {
 				$apcontact['addr'] = $apcontact['nick'] . '@' . str_replace('//', '', Network::unparseURL($parts));
 			} else {
 				$apcontact['addr'] = '';