diff -u b/core/includes/config.inc b/core/includes/config.inc
--- b/core/includes/config.inc
+++ b/core/includes/config.inc
@@ -76,7 +76,7 @@
  *   A configuration object.
  */
 function config($name) {
-  return drupal_container()->get('config.factory')->get($name)->load();
+  return drupal_container()->get('config.factory')->get()->setName($name)->load();
 }
 
 /**
diff -u b/core/lib/Drupal/Core/Config/ConfigFactory.php b/core/lib/Drupal/Core/Config/ConfigFactory.php
--- b/core/lib/Drupal/Core/Config/ConfigFactory.php
+++ b/core/lib/Drupal/Core/Config/ConfigFactory.php
@@ -26,7 +26,7 @@
 
   protected $container;
 
-  protected $configObjects = array();
+  protected $configObject;
 
   public function __construct(ContainerBuilder $container) {
     $this->container = $container;
@@ -41,8 +41,8 @@
    * @return Drupal\Core\Config\ConfigObject
    *   A configuration object with the given $name.
    */
-  public function get($name) {
-    // "Caching" the instantiated objects per name cuts off a fair amount of CPU
+  public function get() {
+    // "Caching" the instantiated config object cuts off a fair amount of CPU
     // time and memory. Only the data within the configuration object changes,
     // so the additional cost of instantiating duplicate objects can be happily
     // avoided. It is not uncommon for a configuration object to be retrieved
@@ -60,10 +60,9 @@
     //   ContainerBuilder involves plenty of function calls (which are known to
     //   be slow in PHP).
-    if (isset($this->configObjects[$name])) {
-      return $this->configObjects[$name];
+    if (!is_object($this->configObject)) {
+      $class = $this->container->getParameter('config.object');
+      $this->configObject = new $class($this->container->get('config.manager'));      
     }
-    $class = $this->container->getParameter('config.object');
-    $this->configObjects[$name] = new $class($this->container->get('config.manager'));
-    return $this->configObjects[$name]->setName($name);
+    return $this->configObject;
   }
 }