diff --git a/core/modules/aggregator/tests/Drupal/aggregator/Tests/Form/SettingsFormTest.php b/core/modules/aggregator/tests/Drupal/aggregator/Tests/Form/SettingsFormTest.php
index 79367dc..29940cb 100644
--- a/core/modules/aggregator/tests/Drupal/aggregator/Tests/Form/SettingsFormTest.php
+++ b/core/modules/aggregator/tests/Drupal/aggregator/Tests/Form/SettingsFormTest.php
@@ -119,7 +119,7 @@ protected function getSettingsForm(array $configs, array $definitions, array $co
     if (!empty($config_names)) {
       $plugin = $this->getMock('Drupal\Core\Plugin\PluginFormInterface');
       $plugin
-        ->expects($this->exactly(6))
+        ->expects($this->exactly(3))
         ->method('getConfigNames')
         ->will($this->returnValue($config_names));
       $plugin_manager