diff --git a/core/lib/Drupal/Core/Config/ConfigInstaller.php b/core/lib/Drupal/Core/Config/ConfigInstaller.php
index 7f7cc11..ae12c91 100644
--- a/core/lib/Drupal/Core/Config/ConfigInstaller.php
+++ b/core/lib/Drupal/Core/Config/ConfigInstaller.php
@@ -112,7 +112,7 @@ public function installDefaultConfig($type, $name) {
         $prefix = $name . '.';
       }
 
-      // Gets a profile storage to search for overrides if necessary.
+      // Gets profile storages to search for overrides if necessary.
       $profile_storages = $this->getProfileStorages($name);
 
       // Gather information about all the supported collections.
@@ -438,7 +438,7 @@ public function checkConfigurationToInstall($type, $name) {
     $enabled_extensions = $this->getEnabledExtensions();
     // Add the extension that will be enabled to the list of enabled extensions.
     $enabled_extensions[] = $name;
-    // Gets a profile storage to search for overrides if necessary.
+    // Gets profile storages to search for overrides if necessary.
     $profile_storages = $this->getProfileStorages($name);
 
     // Check the dependencies of configuration provided by the module.
@@ -559,9 +559,9 @@ protected function getEnabledExtensions() {
    * Gets the profile storage to use to check for profile overrides.
    *
    * The install profile can override module configuration during a module
-   * install. Both the install and optional directories are checking for
-   * matching configuration. This allows profiles to override default
-   * configuration for modules they do not depend on.
+   * install. Both the install and optional directories are checked for matching
+   * configuration. This allows profiles to override default configuration for
+   * modules they do not depend on.
    *
    * @param string $installing_name
    *   (optional) The name of the extension currently being installed.
@@ -575,11 +575,12 @@ protected function getProfileStorages($installing_name = '') {
     $profile = $this->drupalGetProfile();
     $profile_storages = [];
     if ($profile && $profile != $installing_name) {
-      // Profiles should not contain optional configuration so always use the
-      // install directory.
       $profile_path = $this->drupalGetPath('module', $profile);
-      $profile_storages[] = new FileStorage($profile_path . '/' . InstallStorage::CONFIG_INSTALL_DIRECTORY, StorageInterface::DEFAULT_COLLECTION);
-      $profile_storages[] = new FileStorage($profile_path . '/' . InstallStorage::CONFIG_OPTIONAL_DIRECTORY, StorageInterface::DEFAULT_COLLECTION);
+      foreach ([InstallStorage::CONFIG_INSTALL_DIRECTORY, InstallStorage::CONFIG_OPTIONAL_DIRECTORY] as $directory) {
+        if (is_dir($profile_path . '/' . $directory)) {
+          $profile_storages[] = new FileStorage($profile_path . '/' . $directory, StorageInterface::DEFAULT_COLLECTION);
+        }
+      }
     }
     return $profile_storages;
   }