diff --git a/phpBB/includes/ucp/ucp_activate.php b/phpBB/includes/ucp/ucp_activate.php
index 1e54c18dc1..7a90f2e3b1 100644
--- a/phpBB/includes/ucp/ucp_activate.php
+++ b/phpBB/includes/ucp/ucp_activate.php
@@ -87,6 +87,8 @@ class ucp_activate
 				WHERE user_id = ' . $user_row['user_id'];
 			$db->sql_query($sql);
 
+			$user->reset_login_keys($user_row['user_id']);
+
 			$phpbb_log->add('user', $user->data['user_id'], $user->ip, 'LOG_USER_NEW_PASSWORD', false, array(
 				'reportee_id' => $user_row['user_id'],
 				$user_row['username']