diff --git a/phpBB/includes/ucp/ucp_register.php b/phpBB/includes/ucp/ucp_register.php
index 8ad37047cb..3a53148b93 100644
--- a/phpBB/includes/ucp/ucp_register.php
+++ b/phpBB/includes/ucp/ucp_register.php
@@ -293,7 +293,7 @@ class ucp_register
 
 			if ($config['enable_confirm'])
 			{
-				$vc_response = $captcha->validate($data);
+				$vc_response = $captcha->validate();
 				if ($vc_response !== false)
 				{
 					$error[] = $vc_response;
diff --git a/phpBB/phpbb/auth/provider/db.php b/phpBB/phpbb/auth/provider/db.php
index ae9d968076..395a48a9a5 100644
--- a/phpBB/phpbb/auth/provider/db.php
+++ b/phpBB/phpbb/auth/provider/db.php
@@ -177,7 +177,7 @@ class db extends base
 		if ($show_captcha)
 		{
 			$captcha->init(CONFIRM_LOGIN);
-			$vc_response = $captcha->validate($row);
+			$vc_response = $captcha->validate();
 			if ($vc_response)
 			{
 				return array(
diff --git a/phpBB/phpbb/captcha/plugins/legacy_wrapper.php b/phpBB/phpbb/captcha/plugins/legacy_wrapper.php
index 9ce4973827..cc35920c70 100644
--- a/phpBB/phpbb/captcha/plugins/legacy_wrapper.php
+++ b/phpBB/phpbb/captcha/plugins/legacy_wrapper.php
@@ -90,11 +90,11 @@ class legacy_wrapper implements plugin_interface
 	/**
 	 * {@inheritDoc}
 	 */
-	public function validate(array $request_data): bool
+	public function validate(): bool
 	{
 		if (method_exists($this->legacy_captcha, 'validate'))
 		{
-			$error = $this->legacy_captcha->validate($request_data);
+			$error = $this->legacy_captcha->validate();
 			if ($error)
 			{
 				$this->last_error = $error;
diff --git a/phpBB/phpbb/captcha/plugins/plugin_interface.php b/phpBB/phpbb/captcha/plugins/plugin_interface.php
index 0f668f207e..dc522ecd7e 100644
--- a/phpBB/phpbb/captcha/plugins/plugin_interface.php
+++ b/phpBB/phpbb/captcha/plugins/plugin_interface.php
@@ -62,10 +62,9 @@ interface plugin_interface
 	/**
 	 * Validate the captcha with the given request data
 	 *
-	 * @param array $request_data Request data for the captcha
 	 * @return bool True if request data was valid captcha reply, false if not
 	 */
-	public function validate(array $request_data): bool;
+	public function validate(): bool;
 
 	/**
 	 * Return whether captcha was solved