diff -u b/core/modules/config/src/Form/ConfigSync.php b/core/modules/config/src/Form/ConfigSync.php
--- b/core/modules/config/src/Form/ConfigSync.php
+++ b/core/modules/config/src/Form/ConfigSync.php
@@ -166,7 +166,7 @@
   public function buildForm(array $form, array &$form_state) {
     $snapshot_comparer = new StorageComparer($this->activeStorage, $this->snapshotStorage, $this->configManager);
     if (empty($form_state['input']) && $snapshot_comparer->createChangelist()->hasChanges()) {
-      drupal_set_message($this->t('Changes have been made to your active configuration, which might be lost on the next synchronization.'), 'warning');
+      drupal_set_message($this->t('Your current configuration has changed, these changes will be lost on the next synchronization.'), 'warning');
     }
     $form['actions'] = array('#type' => 'actions');
     $form['actions']['submit'] = array(
diff -u b/core/modules/config/src/Tests/ConfigExportImportUITest.php b/core/modules/config/src/Tests/ConfigExportImportUITest.php
--- b/core/modules/config/src/Tests/ConfigExportImportUITest.php
+++ b/core/modules/config/src/Tests/ConfigExportImportUITest.php
@@ -125,10 +125,10 @@
       ->set('slogan', $this->originalSlogan)
       ->save();
     $this->drupalGet('admin/config/development/configuration');
-    $this->assertText('Changes have been made to your active configuration, which might be lost on the next synchronization.');
+    $this->assertText('Your current configuration has changed, these changes will be lost on the next synchronization.');
     $this->drupalPostForm('admin/config/development/configuration', array(), 'Import all');
     $this->drupalGet('admin/config/development/configuration');
-    $this->assertNoText(t('Changes have been made to your active configuration, which might be lost on the next synchronization.'));
+    $this->assertNoText(t('Your current configuration has changed, these changes will be lost on the next synchronization.'));
     $this->assertText(t('There are no configuration changes.'));
 
   }