diff --git a/core/lib/Drupal/Core/Extension/Extension.php b/core/lib/Drupal/Core/Extension/Extension.php
index 3c765fe..ae7722d 100644
--- a/core/lib/Drupal/Core/Extension/Extension.php
+++ b/core/lib/Drupal/Core/Extension/Extension.php
@@ -142,7 +142,7 @@ public function getExtensionFilename() {
    */
   public function load() {
     if ($this->filename) {
-      include_once $this->root . '/' . $this->getPath() . '/' . $this->filename;
+      include $this->root . '/' . $this->getPath() . '/' . $this->filename;
       return TRUE;
     }
     return FALSE;
diff --git a/core/lib/Drupal/Core/Extension/ModuleHandler.php b/core/lib/Drupal/Core/Extension/ModuleHandler.php
index c1eee71..33bdbbd 100644
--- a/core/lib/Drupal/Core/Extension/ModuleHandler.php
+++ b/core/lib/Drupal/Core/Extension/ModuleHandler.php
@@ -268,7 +268,7 @@ public function loadInclude($module, $type, $name = NULL) {
     if (isset($this->moduleList[$module])) {
       $file = $this->root . '/' . $this->moduleList[$module]->getPath() . "/$name.$type";
       if (is_file($file)) {
-        require_once $file;
+        include $file;
         return $file;
       }
     }