diff --git a/core/modules/config/src/Tests/ConfigInstallProfileUnmetDependenciesTest.php b/core/modules/config/src/Tests/ConfigInstallProfileUnmetDependenciesTest.php
index cfebbb6..6683580 100644
--- a/core/modules/config/src/Tests/ConfigInstallProfileUnmetDependenciesTest.php
+++ b/core/modules/config/src/Tests/ConfigInstallProfileUnmetDependenciesTest.php
@@ -90,7 +90,7 @@ public function testInstalled() {
     else {
       $this->fail('Expected Drupal\Core\Config\UnmetDependenciesException exception thrown');
     }
-    $this->assertErrorLogged('Configuration objects provided by user have unmet dependencies: system.action.user_block_user_action (action)');
+    $this->assertErrorLogged('Configuration objects provided by <em class="placeholder">user</em> have unmet dependencies: <em class="placeholder">system.action.user_block_user_action (action)</em>');
   }
 
 }
diff --git a/core/modules/config/src/Tests/ConfigInstallWebTest.php b/core/modules/config/src/Tests/ConfigInstallWebTest.php
index 6c3be10..7006997 100644
--- a/core/modules/config/src/Tests/ConfigInstallWebTest.php
+++ b/core/modules/config/src/Tests/ConfigInstallWebTest.php
@@ -180,7 +180,7 @@ public function testUnmetDependenciesInstall() {
     // not depend on config_test and order is important.
     $this->drupalPostForm('admin/modules', array('modules[Testing][config_test][enable]' => TRUE), t('Install'));
     $this->drupalPostForm('admin/modules', array('modules[Testing][config_install_dependency_test][enable]' => TRUE), t('Install'));
-    $this->assertRaw('Unable to install Config install dependency test due to unmet dependencies: config_test.dynamic.other_module_test_with_dependency (config_other_module_config_test)');
+    $this->assertRaw('Unable to install <em class="placeholder">Config install dependency test</em> due to unmet dependencies: <em class="placeholder">config_test.dynamic.other_module_test_with_dependency (config_other_module_config_test)</em>');
 
     $this->drupalPostForm('admin/modules', array('modules[Testing][config_other_module_config_test][enable]' => TRUE), t('Install'));
     $this->drupalPostForm('admin/modules', array('modules[Testing][config_install_dependency_test][enable]' => TRUE), t('Install'));
diff --git a/core/tests/Drupal/KernelTests/Core/Config/ConfigInstallTest.php b/core/tests/Drupal/KernelTests/Core/Config/ConfigInstallTest.php
index d77a5af..10cac18 100644
--- a/core/tests/Drupal/KernelTests/Core/Config/ConfigInstallTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Config/ConfigInstallTest.php
@@ -200,7 +200,7 @@ public function testDependencyChecking() {
     catch (UnmetDependenciesException $e) {
       $this->assertEqual($e->getExtension(), 'config_install_dependency_test');
       $this->assertEqual($e->getConfigObjects(), ['config_test.dynamic.other_module_test_with_dependency' => ['config_other_module_config_test']]);
-      $this->assertEqual($e->getMessage(), 'Configuration objects provided by config_install_dependency_test have unmet dependencies: config_test.dynamic.other_module_test_with_dependency (config_other_module_config_test)');
+      $this->assertEqual($e->getMessage(), 'Configuration objects provided by <em class="placeholder">config_install_dependency_test</em> have unmet dependencies: <em class="placeholder">config_test.dynamic.other_module_test_with_dependency (config_other_module_config_test)</em>');
     }
     $this->installModules(['config_other_module_config_test']);
     $this->installModules(['config_install_dependency_test']);