diff --git a/core/modules/config/src/Tests/ConfigExportUITest.php b/core/modules/config/src/Tests/ConfigExportUITest.php
index f6840ef..baae741 100644
--- a/core/modules/config/src/Tests/ConfigExportUITest.php
+++ b/core/modules/config/src/Tests/ConfigExportUITest.php
@@ -86,6 +86,11 @@ function testExport() {
     // Check the single export form doesn't have "form-required" elements.
     $this->drupalGet('admin/config/development/configuration/single/export');
     $this->assertNoRaw('js-form-required form-required', 'No form required fields are found.');
+
+    // Ensure that the default option for the single export form prompts the
+    // user to make a choice.
+    $default_option = $this->xpath('//*[@name="config_name"]/option[text()="- Select -"]');
+    $this->assertTrue(!empty($default_option), 'The default option prompts user to make a choice.');
   }
 
 }