diff --git a/core/lib/Drupal/Core/Command/GenerateTheme.php b/core/lib/Drupal/Core/Command/GenerateTheme.php
index 330df7bbc9..fbfebbf2d1 100644
--- a/core/lib/Drupal/Core/Command/GenerateTheme.php
+++ b/core/lib/Drupal/Core/Command/GenerateTheme.php
@@ -252,7 +252,7 @@ private function copyRecursive($src, $dest): void {
    * @return string
    */
   private function getUniqueTmpDirPath(): string {
-    return \Drupal::service('file_system')->getTempDirectory() . '/drupal-starterkit-theme-' . uniqid(md5(microtime()), TRUE);
+    return sys_get_temp_dir() . '/drupal-starterkit-theme-' . uniqid(md5(microtime()), TRUE);
   }
 
   /**