diff --git a/core/lib/Drupal/Core/Config/FileStorage.php b/core/lib/Drupal/Core/Config/FileStorage.php
index ed53f4b..2a6d448 100644
--- a/core/lib/Drupal/Core/Config/FileStorage.php
+++ b/core/lib/Drupal/Core/Config/FileStorage.php
@@ -105,14 +105,13 @@ class FileStorage {
    */
   public function read() {
     if (!$this->exists()) {
-      // Use var_export to quote $this->name to separate from text.
-      throw new FileStorageReadException('Configuration file ' . var_export($this->name, TRUE) . ' does not exist.');
+      throw new FileStorageReadException("Configuration file '$this->name' does not exist.");
     }
 
     $data = file_get_contents($this->getFilePath());
     $data = $this->decode($data);
     if ($data === FALSE) {
-      throw new FileStorageReadException('Failed to decode configuration file ' . var_export($this->name, TRUE) . '.');
+      throw new FileStorageReadException("Failed to decode configuration file '$this->name'.");
     }
     return $data;
   }