diff --git a/core/modules/config/src/Tests/ConfigInstallWebTest.php b/core/modules/config/src/Tests/ConfigInstallWebTest.php
index 131f185..190e752 100644
--- a/core/modules/config/src/Tests/ConfigInstallWebTest.php
+++ b/core/modules/config/src/Tests/ConfigInstallWebTest.php
@@ -132,7 +132,8 @@ function testInstallProfileConfigOverwrite() {
     // Turn on the test module, which will attempt to replace the
     // configuration data. This attempt to replace the active configuration
     // should be ignored.
-    \Drupal::service('module_installer')->install(array('config_existing_default_config_test'));
+    $status = \Drupal::service('module_installer')->install(array('config_existing_default_config_test'));
+    $this->assertTrue($status, "The module config_existing_default_config_test was installed.");
 
     // Verify that the test module has not been able to change the data.
     $config = \Drupal::config($config_name);
diff --git a/core/modules/config/tests/config_existing_default_config_test/config_existing_default_config_test.info.yml b/core/modules/config/tests/config_existing_default_config_test/config_existing_default_config_test.info.yml
new file mode 100644
index 0000000..4163a85
--- /dev/null
+++ b/core/modules/config/tests/config_existing_default_config_test/config_existing_default_config_test.info.yml
@@ -0,0 +1,6 @@
+name: 'Configuration existing default config test'
+type: module
+package: Testing
+version: VERSION
+core: 8.x
+hidden: true
diff --git a/core/modules/config/tests/config_existing_default_config_test/config_existing_default_config_test.yml b/core/modules/config/tests/config_existing_default_config_test/config_existing_default_config_test.yml
deleted file mode 100644
index 4163a85..0000000
--- a/core/modules/config/tests/config_existing_default_config_test/config_existing_default_config_test.yml
+++ /dev/null
@@ -1,6 +0,0 @@
-name: 'Configuration existing default config test'
-type: module
-package: Testing
-version: VERSION
-core: 8.x
-hidden: true