diff --git a/twitter/twitter.php b/twitter/twitter.php
index f35ff8d3..5aeecf30 100644
--- a/twitter/twitter.php
+++ b/twitter/twitter.php
@@ -1288,7 +1288,7 @@ function twitter_fetchtimeline(int $uid): void
 	$osecret = DI::pConfig()->get($uid, 'twitter', 'oauthsecret');
 	$lastid  = DI::pConfig()->get($uid, 'twitter', 'lastid');
 
-	$application_name = DI::keyValue()->get('twitter_application_name');
+	$application_name = DI::keyValue()->get('twitter_application_name') ?? '';
 
 	if ($application_name == '') {
 		$application_name = DI::baseUrl()->getHostname();
@@ -2187,7 +2187,7 @@ function twitter_fetchhometimeline(int $uid): void
 
 	Logger::info('Fetching timeline', ['uid' => $uid]);
 
-	$application_name = DI::keyValue()->get('twitter_application_name');
+	$application_name = DI::keyValue()->get('twitter_application_name') ?? '';
 
 	if ($application_name == '') {
 		$application_name = DI::baseUrl()->getHostname();