diff --git a/core/lib/Drupal/Core/Config/ConfigInstaller.php b/core/lib/Drupal/Core/Config/ConfigInstaller.php
index 6900071..075b656 100644
--- a/core/lib/Drupal/Core/Config/ConfigInstaller.php
+++ b/core/lib/Drupal/Core/Config/ConfigInstaller.php
@@ -411,7 +411,7 @@ public function checkConfigurationToInstall($type, $name) {
 
     // Install profiles can not have config clashes. Configuration that
     // has the same name as a module's configuration will be used instead.
-    if ($name != Settings::get('install_profile')) {
+    if ($name != $this->drupalGetProfile()) {
       // Validate default configuration of this module. Bail if unable to
       // install. Should not continue installing more modules because those
       // may depend on this one.
@@ -546,4 +546,16 @@ protected function drupalGetPath($type, $name) {
     return drupal_get_path($type, $name);
   }
 
+  /**
+   * Wrapper for drupal_get_profile().
+   *
+   * @return string|null $profile
+   *   The name of the installation profile or NULL if no installation profile is
+   *   currently active. This is the case for example during the first steps of
+   *   the installer or during unit tests.
+   */
+  protected function drupalGetProfile() {
+    return drupal_get_profile();
+  }
+
 }