diff --git a/core/lib/Drupal/Core/Update/UpdateCompilerPass.php b/core/lib/Drupal/Core/Update/UpdateCompilerPass.php
index 9da1323211..6ac05886d0 100644
--- a/core/lib/Drupal/Core/Update/UpdateCompilerPass.php
+++ b/core/lib/Drupal/Core/Update/UpdateCompilerPass.php
@@ -41,14 +41,13 @@ public function process(ContainerBuilder $container) {
           }
         }
       }
-      // Repeat if services or aliases have been removed.
+      // Repeat if services have been removed.
     } while ($has_changed);
 
-    // We only need to check aliases is we've removed a service because
-    // references to aliases have already been resolved by Symfony's
-    // ResolveReferencesToAliasesPass.
+    // Remove aliases to services that have been removed. This does not need to
+    // be part of the loop above because references to aliases have already been
+    // resolved by Symfony's ResolveReferencesToAliasesPass.
     if ($process_aliases) {
-      // Remove any aliases which point to undefined services.
       foreach ($container->getAliases() as $key => $alias) {
         $id = (string) $alias;
         if (!$container->has($id)) {
diff --git a/core/modules/system/tests/src/Functional/Update/UpdatePathNewDependencyTest.php b/core/modules/system/tests/src/Functional/Update/UpdatePathNewDependencyTest.php
index 8076a83e98..57a53278c4 100644
--- a/core/modules/system/tests/src/Functional/Update/UpdatePathNewDependencyTest.php
+++ b/core/modules/system/tests/src/Functional/Update/UpdatePathNewDependencyTest.php
@@ -38,7 +38,6 @@ public function testUpdateNewDependency() {
 
     // Rebuild the container and test that the service with the optional unmet
     // dependency is still available while the ones that fail are not.
-
     try {
       $this->rebuildContainer();
       $this->fail('The container has services with unmet dependencies and should have failed to rebuild.');