diff --git a/src/Worker/UpdateServerDirectory.php b/src/Worker/UpdateServerDirectory.php
index dd94aa52c7..90bd5c50a4 100644
--- a/src/Worker/UpdateServerDirectory.php
+++ b/src/Worker/UpdateServerDirectory.php
@@ -61,6 +61,9 @@ class UpdateServerDirectory
 
 		$urls = [];
 		foreach ($contacts['entry'] as $entry) {
+			if (empty($entry['urls'])) {
+				continue;
+			}
 			foreach ($entry['urls'] as $url_entry) {
 				if (empty($url_entry['type']) || empty($url_entry['value'])) {
 					continue;