diff --git a/core/lib/Drupal/Core/Form/ConfigFormBaseTrait.php b/core/lib/Drupal/Core/Form/ConfigFormBaseTrait.php
index 24d31af..3cabd9b 100644
--- a/core/lib/Drupal/Core/Form/ConfigFormBaseTrait.php
+++ b/core/lib/Drupal/Core/Form/ConfigFormBaseTrait.php
@@ -58,7 +58,7 @@ protected function config($name) {
 
       // Show a message if this config was overridden in settings.php.
       if (isset($GLOBALS['config'][$name])) {
-        drupal_set_message(t('This form may include elements whose values are overridden. Editing those values will save changes but will only be used if the overrides do not apply.'), 'warning');
+        drupal_set_message(t('This form may include elements whose values are overridden using settings.php. Editing those values will save changes but will only be used if the overrides do not apply.'), 'warning');
       }
     }
     else {
diff --git a/core/modules/config/src/Tests/ConfigFormOverrideTest.php b/core/modules/config/src/Tests/ConfigFormOverrideTest.php
index bbb8de9..e618403 100644
--- a/core/modules/config/src/Tests/ConfigFormOverrideTest.php
+++ b/core/modules/config/src/Tests/ConfigFormOverrideTest.php
@@ -25,7 +25,7 @@ public function testFormsWithOverrides() {
 
     // Ensure warning is not present if no overrides exist.
     $this->drupalGet('admin/config/system/site-information');
-    $this->assertNoText('This form may include elements whose values are overridden. Editing those values will save changes but will only be used if the overrides do not apply.');
+    $this->assertNoText('This form may include elements whose values are overridden using settings.php. Editing those values will save changes but will only be used if the overrides do not apply.');
 
     $overridden_name = 'Site name global conf override';
 
@@ -44,7 +44,7 @@ public function testFormsWithOverrides() {
     $this->assertIdentical((string) $elements[0]['value'], 'Drupal');
 
     // Ensure the warning is displayed.
-    $this->assertText('This form may include elements whose values are overridden. Editing those values will save changes but will only be used if the overrides do not apply.');
+    $this->assertText('This form may include elements whose values are overridden using settings.php. Editing those values will save changes but will only be used if the overrides do not apply.');
 
     // Submit the form and ensure the site name is not changed.
     $edit = array(