diff --git a/lib/Cron/Crawler.php b/lib/Cron/Crawler.php
index 8084a992..43ad958a 100644
--- a/lib/Cron/Crawler.php
+++ b/lib/Cron/Crawler.php
@@ -178,7 +178,7 @@ protected function loadFeed() {
 
 		// Check if the signature actually matches the downloaded content
 		$certificate = openssl_get_publickey(file_get_contents(__DIR__ . '/../../appinfo/certificate.crt'));
-		$verified = (bool)openssl_verify($feedBody, base64_decode($signature), $certificate, OPENSSL_ALGO_SHA512);
+		$verified = openssl_verify($feedBody, base64_decode($signature), $certificate, OPENSSL_ALGO_SHA512) === 1;
 
 		// PHP 8 automatically frees the key instance and deprecates the function
 		if (PHP_VERSION_ID < 80000) {