diff --git a/lib/private/Contacts/ContactsMenu/Providers/LocalTimeProvider.php b/lib/private/Contacts/ContactsMenu/Providers/LocalTimeProvider.php
index a5d911a03b17d..b51ade4d74da3 100644
--- a/lib/private/Contacts/ContactsMenu/Providers/LocalTimeProvider.php
+++ b/lib/private/Contacts/ContactsMenu/Providers/LocalTimeProvider.php
@@ -35,7 +35,7 @@ public function process(IEntry $entry): void {
 		$targetUserId = $entry->getProperty('UID');
 		$targetUser = $this->userManager->get($targetUserId);
 		if (!empty($targetUser)) {
-			$timezone = $this->config->getUserValue($targetUser->getUID(), 'core', 'timezone') ?: date_default_timezone_get();
+			$timezone = $this->config->getUserValue($targetUser->getUID(), 'core', 'timezone') ?: $this->config->getSystemValueString('default_timezone', 'UTC');
 			$dateTimeZone = new \DateTimeZone($timezone);
 			$localTime = $this->dateTimeFormatter->formatTime($this->timeFactory->getDateTime(), 'short', $dateTimeZone);