diff --git a/core/includes/bootstrap.inc b/core/includes/bootstrap.inc
index 6abe08a..4e66460 100644
--- a/core/includes/bootstrap.inc
+++ b/core/includes/bootstrap.inc
@@ -2860,6 +2860,11 @@ function drupal_classloader() {
  */
 function drupal_classloader_register($name, $path) {
   $loader = drupal_classloader();
+
+  // Convert the namespace component from lowercase_underscore into
+  // UpperCamelCase to follow common best practices for class naming in PHP.
+  $name = Symfony\Component\DependencyInjection\Container::camelize($name);
+
   $loader->registerNamespace('Drupal\\' . $name, DRUPAL_ROOT . '/' . $path . '/lib');
 }