diff --git a/core/lib/Drupal/Core/Database/Install/Tasks.php b/core/lib/Drupal/Core/Database/Install/Tasks.php
index 6de6b29..d33ec96 100644
--- a/core/lib/Drupal/Core/Database/Install/Tasks.php
+++ b/core/lib/Drupal/Core/Database/Install/Tasks.php
@@ -295,6 +295,7 @@ public function getFormOptions(array $database) {
   public function validateDatabaseSettings($database) {
     $errors = array();
 
+    // @todo Implement #2644960: Specific DB name validation per DB driver.
     // Verify there are no illegal characters in the database name.
     if (!empty($database['database']) && preg_match('/[^a-zA-Z0-9_.]/', $database['database'])) {
       $errors[$database['driver'] . '][database'] = t('The database name you have entered, %database, is invalid. The database name can only contain alphanumeric characters, underscores or dots.', array('%database' => $database['database']));