diff --git a/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php b/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
index 9c95053c69d42..7a6ef9851ec99 100644
--- a/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
+++ b/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
@@ -120,14 +120,14 @@ public function dump(array $options = array())
             'namespace' => '',
             'as_files' => false,
             'debug' => true,
-            'hot_path_tag' => null,
+            'hot_path_tag' => 'container.hot_path',
             'inline_class_loader_parameter' => 'container.dumper.inline_class_loader',
         ), $options);
 
         $this->namespace = $options['namespace'];
         $this->asFiles = $options['as_files'];
         $this->hotPathTag = $options['hot_path_tag'];
-        $this->inlineRequires = $this->container->hasParameter($options['inline_class_loader_parameter']) && $this->container->getParameter($options['inline_class_loader_parameter']);
+        $this->inlineRequires = $options['inline_class_loader_parameter'] && $this->container->hasParameter($options['inline_class_loader_parameter']) && $this->container->getParameter($options['inline_class_loader_parameter']);
 
         if (0 !== strpos($baseClass = $options['base_class'], '\\') && 'Container' !== $baseClass) {
             $baseClass = sprintf('%s\%s', $options['namespace'] ? '\\'.$options['namespace'] : '', $baseClass);
diff --git a/src/Symfony/Component/HttpKernel/Kernel.php b/src/Symfony/Component/HttpKernel/Kernel.php
index 3b465dc7d5b2c..a30d5916f9ae6 100644
--- a/src/Symfony/Component/HttpKernel/Kernel.php
+++ b/src/Symfony/Component/HttpKernel/Kernel.php
@@ -818,7 +818,7 @@ protected function dumpContainer(ConfigCache $cache, ContainerBuilder $container
             'file' => $cache->getPath(),
             'as_files' => true,
             'debug' => $this->debug,
-            'hot_path_tag' => !$this->loadClassCache ? 'container.hot_path' : null,
+            'inline_class_loader_parameter' => !$this->loadClassCache && !class_exists(ClassCollectionLoader::class, false) ? 'container.dumper.inline_class_loader' : null,
         ));
 
         $rootCode = array_pop($content);