diff --git a/core/lib/Drupal/Core/Template/TwigEnvironment.php b/core/lib/Drupal/Core/Template/TwigEnvironment.php
index 9758cc9..f268c41 100644
--- a/core/lib/Drupal/Core/Template/TwigEnvironment.php
+++ b/core/lib/Drupal/Core/Template/TwigEnvironment.php
@@ -135,7 +135,7 @@ public function getCacheFilename($name) {
 
     // Just check the list of loaded extensions once.
     if (!isset($this->templateCacheFilenamePrefix)) {
-      $this->templateCacheFilenamePrefix = hash('crc32b', $this->twigExtensionHash . \Drupal::VERSION . Settings::get('deployment_identifier'));
+      $this->templateCacheFilenamePrefix = hash('crc32b', $this->twigExtensionHash);
     }
 
     // The first part is what is invalidated.
diff --git a/core/modules/system/src/Tests/Theme/TwigEnvironmentTest.php b/core/modules/system/src/Tests/Theme/TwigEnvironmentTest.php
index ecf38b1..e6e5988 100644
--- a/core/modules/system/src/Tests/Theme/TwigEnvironmentTest.php
+++ b/core/modules/system/src/Tests/Theme/TwigEnvironmentTest.php
@@ -100,16 +100,7 @@ public function testCacheFilename() {
     $new_extension_filename = $environment->getCacheFilename('core/modules/system/templates/container.html.twig');
     \Drupal::getContainer()->set('twig', NULL);
 
-    // Change the deployment identifier.
-    $settings = Settings::getAll();
-    $settings['deployment_identifier'] = '7297';
-    new Settings($settings);
-
-    $environment = \Drupal::service('twig');
-    $deyploment_identifier_change_filename = $environment->getCacheFilename('core/modules/system/templates/container.html.twig');
-
     $this->assertNotEqual($new_extension_filename, $original_filename);
-    $this->assertNotEqual($deyploment_identifier_change_filename, $original_filename);
   }
 
 }