diff --git a/phpBB/language/en/captcha_recaptcha.php b/phpBB/language/en/captcha_recaptcha.php
index 10eace67df..60d61cc2c8 100644
--- a/phpBB/language/en/captcha_recaptcha.php
+++ b/phpBB/language/en/captcha_recaptcha.php
@@ -46,15 +46,15 @@ $lang = array_merge($lang, array(
 
 	'RECAPTCHA_INCORRECT'			=> 'The solution you provided was incorrect',
 	'RECAPTCHA_NOSCRIPT'			=> 'Please enable JavaScript in your browser to load the challenge.',
-	'RECAPTCHA_NOT_AVAILABLE'		=> 'In order to use reCaptcha, you must create an account on <a href="http://www.google.com/recaptcha">www.google.com/recaptcha</a>.',
+	'RECAPTCHA_NOT_AVAILABLE'		=> 'In order to use reCaptcha, you must create an account on <a href="https://www.google.com/recaptcha">www.google.com/recaptcha</a>.',
 	'RECAPTCHA_INVISIBLE'			=> 'This CAPTCHA is actually invisible. To verify that it works, a small icon should appear in right bottom corner of this page.',
 
 	'RECAPTCHA_PUBLIC'				=> 'Site key',
-	'RECAPTCHA_PUBLIC_EXPLAIN'		=> 'Your site reCAPTCHA key. Keys can be obtained on <a href="http://www.google.com/recaptcha">www.google.com/recaptcha</a>. Please, use reCAPTCHA v2 &gt; Invisible reCAPTCHA badge type.',
-	'RECAPTCHA_V3_PUBLIC_EXPLAIN'	=> 'Your site reCAPTCHA key. Keys can be obtained on <a href="http://www.google.com/recaptcha">www.google.com/recaptcha</a>. Please, use reCAPTCHA v3.',
+	'RECAPTCHA_PUBLIC_EXPLAIN'		=> 'Your site reCAPTCHA key. Keys can be obtained on <a href="https://www.google.com/recaptcha">www.google.com/recaptcha</a>. Please, use reCAPTCHA v2 &gt; Invisible reCAPTCHA badge type.',
+	'RECAPTCHA_V3_PUBLIC_EXPLAIN'	=> 'Your site reCAPTCHA key. Keys can be obtained on <a href="https://www.google.com/recaptcha">www.google.com/recaptcha</a>. Please, use reCAPTCHA v3.',
 	'RECAPTCHA_PRIVATE'				=> 'Secret key',
-	'RECAPTCHA_PRIVATE_EXPLAIN'		=> 'Your secret reCAPTCHA key. Keys can be obtained on <a href="http://www.google.com/recaptcha">www.google.com/recaptcha</a>. Please, use reCAPTCHA v2 &gt; Invisible reCAPTCHA badge type.',
-	'RECAPTCHA_V3_PRIVATE_EXPLAIN'	=> 'Your secret reCAPTCHA key. Keys can be obtained on <a href="http://www.google.com/recaptcha">www.google.com/recaptcha</a>. Please, use reCAPTCHA v3.',
+	'RECAPTCHA_PRIVATE_EXPLAIN'		=> 'Your secret reCAPTCHA key. Keys can be obtained on <a href="https://www.google.com/recaptcha">www.google.com/recaptcha</a>. Please, use reCAPTCHA v2 &gt; Invisible reCAPTCHA badge type.',
+	'RECAPTCHA_V3_PRIVATE_EXPLAIN'	=> 'Your secret reCAPTCHA key. Keys can be obtained on <a href="https://www.google.com/recaptcha">www.google.com/recaptcha</a>. Please, use reCAPTCHA v3.',
 
 	'RECAPTCHA_V3_DOMAIN'				=> 'Request domain',
 	'RECAPTCHA_V3_DOMAIN_EXPLAIN'		=> 'The domain to fetch the script from and to use when verifying the request.<br>Use <samp>recaptcha.net</samp> when <samp>google.com</samp> is not accessible.',
diff --git a/phpBB/phpbb/captcha/plugins/recaptcha_v3.php b/phpBB/phpbb/captcha/plugins/recaptcha_v3.php
index ceea796d96..7505419a31 100644
--- a/phpBB/phpbb/captcha/plugins/recaptcha_v3.php
+++ b/phpBB/phpbb/captcha/plugins/recaptcha_v3.php
@@ -262,7 +262,7 @@ class recaptcha_v3 extends captcha_abstract
 
 			'RECAPTCHA_ACTION'		=> self::$actions[$this->type] ?? reset(self::$actions),
 			'RECAPTCHA_KEY'			=> $config['recaptcha_v3_key'] ?? '',
-			'U_RECAPTCHA_SCRIPT'	=> sprintf('//%s/recaptcha/api.js?render=%s', $domain, $render),
+			'U_RECAPTCHA_SCRIPT'	=> sprintf('//%1$s/recaptcha/api.js?render=%2$s', $domain, $render),
 
 			'S_CONFIRM_CODE'		=> true,
 			'S_RECAPTCHA_AVAILABLE'	=> $this->is_available(),