diff --git a/fn/auth.php b/fn/auth.php
index 240f8ea..d3e1b70 100644
--- a/fn/auth.php
+++ b/fn/auth.php
@@ -141,10 +141,10 @@ function authDeleteUser(string $user_id): void {
 }
 
 function rateLimit(): void {
-	if (PAGE_METADATA['tokens_account_cost'] ?? 0 > 0)
+	if ((PAGE_METADATA['tokens_account_cost'] ?? 0) > 0)
 		rateLimitAccount(PAGE_METADATA['tokens_account_cost']);
 
-	if (PAGE_METADATA['tokens_instance_cost'] ?? 0 > 0)
+	if ((PAGE_METADATA['tokens_instance_cost'] ?? 0) > 0)
 		rateLimitInstance(PAGE_METADATA['tokens_instance_cost']);
 }
 
diff --git a/jobs/check.php b/jobs/check.php
index e10c7da..7e5e5c5 100644
--- a/jobs/check.php
+++ b/jobs/check.php
@@ -108,7 +108,7 @@ function testReg(): string {
 		'ns' => 'ns1.servnest.invalid.',
 	]);
 	$results = kdig(name: $domain, type: 'NS', server: CONF['reg']['address']);
-	if ($results['authorityRRs'][0]['rdataNS'] !== 'ns1.servnest.invalid.')
+	if (($results['authorityRRs'][0]['rdataNS'] ?? NULL) !== 'ns1.servnest.invalid.')
 		exit('Error: /reg/ns: NS record not set' . LF);
 
 	curlTest('/reg/ns', [
@@ -189,9 +189,9 @@ function testNs(string $domain): void {
 		'value' => 'letsencrypt.org',
 	]);
 	$results = kdig(name: $domain, type: 'CAA', server: CONF['reg']['address']);
-	if ($results['answerRRs'][0]['TTL'] !== 7200)
+	if (($results['answerRRs'][0]['TTL'] ?? NULL) !== 7200)
 		exit('Error: /ns/caa: wrong TTL' . LF);
-	if ($results['answerRRs'][0]['rdataCAA'] !== '0 issue "letsencrypt.org" ')
+	if (($results['answerRRs'][0]['rdataCAA'] ?? NULL) !== '0 issue "letsencrypt.org" ')
 		exit('Error: /ns/caa: CAA record not set' . LF);
 
 	curlTest('/ns/edit', [
@@ -200,7 +200,7 @@ function testNs(string $domain): void {
 			. '@ 86400 NS ' . CONF['ns']['servers'][0] . "\r\n",
 	]);
 	$results = kdig(name: 'aaaa.' . $domain, type: 'AAAA', server: CONF['reg']['address']);
-	if ($results['answerRRs'][0]['rdataAAAA'] !== CONF['ht']['ipv6_address'])
+	if (($results['answerRRs'][0]['rdataAAAA'] ?? NULL) !== CONF['ht']['ipv6_address'])
 		exit('Error: /ns/edit: AAAA record not set' . LF);
 }
 
diff --git a/view.php b/view.php
index 9bf6544..f955ab0 100644
--- a/view.php
+++ b/view.php
@@ -41,7 +41,7 @@ if (CONF['common']['services']['auth'] === 'error' OR (in_array(SERVICE, SERVICE
 
 require ROOT_PATH . '/pg-view/' . PAGE_ADDRESS . '.php';
 
-if ($_POST === [] AND PAGE_METADATA['require-login'] ?? true !== false AND !isset($_SESSION['id']) AND PAGE_TERMINAL)
+if ($_POST === [] AND (PAGE_METADATA['require-login'] ?? true) !== false AND !isset($_SESSION['id']) AND PAGE_TERMINAL)
 	echo '<p>' . sprintf(_('This form won\'t be accepted because you need to %slog in%s first.'), '<a class="auth" href="' . redirUrl('auth/login') . '">', '</a>') . '</p>';
 
 displayFinalMessage($data);