diff --git a/core/modules/system/src/Tests/Installer/InstallerExistingConfigMultilingualTest.php b/core/modules/system/src/Tests/Installer/InstallerExistingConfigMultilingualTest.php
new file mode 100644
index 0000000..d6ae3e0
--- /dev/null
+++ b/core/modules/system/src/Tests/Installer/InstallerExistingConfigMultilingualTest.php
@@ -0,0 +1,17 @@
+<?php
+
+namespace Drupal\system\Tests\Installer;
+
+/**
+ * Verifies that installing from existing configuration works.
+ *
+ * @group Installer
+ */
+class InstallerExistingConfigMultilingualTest extends InstallerExistingConfigTestBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  protected $profile = 'testing_config_install_multilingual';
+
+}
diff --git a/core/modules/system/src/Tests/Installer/InstallerExistingConfigTest.php b/core/modules/system/src/Tests/Installer/InstallerExistingConfigTest.php
index 8c64934..04d8b40 100644
--- a/core/modules/system/src/Tests/Installer/InstallerExistingConfigTest.php
+++ b/core/modules/system/src/Tests/Installer/InstallerExistingConfigTest.php
@@ -2,14 +2,12 @@
 
 namespace Drupal\system\Tests\Installer;
 
-use Drupal\simpletest\InstallerTestBase;
-
 /**
  * Verifies that installing from existing configuration works.
  *
  * @group Installer
  */
-class InstallerExistingConfigTest extends InstallerTestBase {
+class InstallerExistingConfigTest extends InstallerExistingConfigTestBase {
 
   /**
    * {@inheritdoc}
@@ -19,49 +17,12 @@ class InstallerExistingConfigTest extends InstallerTestBase {
   /**
    * {@inheritdoc}
    */
-  public function setUpLanguage() {
-    // The configuration is from a site installed in French.
-    // However, we select English on the first step to test that the language
-    // changes to French after the profile is selected.
-    $this->translations['Save and continue'] = 'Save and continue';
-    parent::setUpLanguage();
-  }
-
-  /**
-   * {@inheritdoc}
-   */
-  public function setUpSettings() {
+  public function setUpSite() {
     // The configuration is from a site installed in French.
     // So after selecting the profile the installer detects that the site must
     // be installed in French, thus we change the button translation.
     $this->translations['Save and continue'] = 'Enregistrer et continuer';
-    parent::setUpSettings();
-  }
-
-  /**
-   * {@inheritdoc}
-   */
-  protected function installParameters() {
-    $parameters = parent::installParameters();
-
-    // The options that change configuration are disabled when installing from
-    // existing configuration.
-    unset($parameters['forms']['install_configure_form']['site_name']);
-    unset($parameters['forms']['install_configure_form']['site_mail']);
-    unset($parameters['forms']['install_configure_form']['update_status_module']);
-
-    return $parameters;
-  }
-
-  /**
-   * Confirms that the installation installed the configuration correctly.
-   */
-  public function testConfigSync() {
-    // After installation there is no snapshot and nothing to import.
-    $this->drupalGet('admin/config/development/configuration');
-    $this->assertNoText(t('Warning message'));
-    $this->assertText(t('There are no configuration changes to import.'));
-
+    parent::setUpSite();
   }
 
 }
diff --git a/core/modules/system/src/Tests/Installer/InstallerExistingConfigTestBase.php b/core/modules/system/src/Tests/Installer/InstallerExistingConfigTestBase.php
new file mode 100644
index 0000000..6ac3db6
--- /dev/null
+++ b/core/modules/system/src/Tests/Installer/InstallerExistingConfigTestBase.php
@@ -0,0 +1,46 @@
+<?php
+
+namespace Drupal\system\Tests\Installer;
+
+use Drupal\simpletest\InstallerTestBase;
+
+/**
+ * Provides a base class for testing installing from existing configuration.
+ *
+ * @group Installer
+ */
+abstract class InstallerExistingConfigTestBase extends InstallerTestBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function installParameters() {
+    $parameters = parent::installParameters();
+
+    // The options that change configuration are disabled when installing from
+    // existing configuration.
+    unset($parameters['forms']['install_configure_form']['site_name']);
+    unset($parameters['forms']['install_configure_form']['site_mail']);
+    unset($parameters['forms']['install_configure_form']['update_status_module']);
+
+    return $parameters;
+  }
+
+  /**
+   * Confirms that the installation installed the configuration correctly.
+   */
+  public function testConfigSync() {
+    // After installation there is no snapshot and nothing to import.
+    $change_list = $this->configImporter()->getStorageComparer()->getChangelist();
+    $expected = [
+      'create' => [],
+      // The system.mail is changed configuration because the test system
+      // changes it to ensure that mails are not sent.
+      'update' => ['system.mail'],
+      'delete' => [],
+      'rename' => [],
+    ];
+    $this->assertEqual($expected, $change_list);
+  }
+
+}
diff --git a/core/profiles/testing_config_install/config/sync/core.extension.yml b/core/profiles/testing_config_install/config/sync/core.extension.yml
index 5a8d6b5..b06b97a 100644
--- a/core/profiles/testing_config_install/config/sync/core.extension.yml
+++ b/core/profiles/testing_config_install/config/sync/core.extension.yml
@@ -16,6 +16,7 @@ module:
   testing_config_install: 1000
 theme:
   stark: 0
+profile: testing_config_install
 _core:
   default_config_hash: m2GVq11UAOVuNgj8x0t5fMOPujpvQQ_zxLoaly1BMEU
 langcode: fr
diff --git a/core/profiles/testing_config_install_multilingual/config/sync/core.extension.yml b/core/profiles/testing_config_install_multilingual/config/sync/core.extension.yml
index b1609a5..211c0d3 100644
--- a/core/profiles/testing_config_install_multilingual/config/sync/core.extension.yml
+++ b/core/profiles/testing_config_install_multilingual/config/sync/core.extension.yml
@@ -15,5 +15,6 @@ module:
   testing_config_install_multilingual: 1000
 theme:
   stark: 0
+profile: testing_config_install_multilingual
 _core:
   default_config_hash: m2GVq11UAOVuNgj8x0t5fMOPujpvQQ_zxLoaly1BMEU
diff --git a/core/profiles/testing_config_install_multilingual/testing_config_install_multilingual.info.yml b/core/profiles/testing_config_install_multilingual/testing_config_install_multilingual.info.yml
index deb62f8..9e1df08 100644
--- a/core/profiles/testing_config_install_multilingual/testing_config_install_multilingual.info.yml
+++ b/core/profiles/testing_config_install_multilingual/testing_config_install_multilingual.info.yml
@@ -1,6 +1,6 @@
 name: 'Tests config_install flag multilingual'
 type: profile
-description: 'Tests using the config importer during install with multilingual contnet.'
+description: 'Tests using the config importer during install with multilingual content.'
 version: VERSION
 core: 8.x
 hidden: true