diff --git a/src/DI/TessaExtension.php b/src/DI/TessaExtension.php
index d103ac3..e793c7f 100644
--- a/src/DI/TessaExtension.php
+++ b/src/DI/TessaExtension.php
@@ -14,6 +14,7 @@
 use Nette\DI\CompilerExtension;
 use Nette\Schema\Expect;
 use Nette\Schema\Schema;
+use Nette\Utils\ArrayHash;
 
 final class TessaExtension extends CompilerExtension
 {
@@ -47,10 +48,14 @@ public function loadConfiguration()
 		$builder = $this->getContainerBuilder();
 		$config = $this->getConfig();
 
+		if (!is_object($config)) {
+			$config = ArrayHash::from($config);
+		}
+
 		$storage = $builder->addDefinition($this->prefix('storage'))
 			->setFactory(Storage::class, [$config->outputDir])
 			->addSetup('setCheckLastModified', [$config->checkLastModified])
-			->addSetup('setDebugMode', [$config->debugMode]);
+			->addSetup('setDebugMode', [$config->debugMode ?? false]);
 
 		foreach ($config->filters as $filter) {
 			$storage->addSetup('addFilter', [$filter]);
@@ -69,10 +74,10 @@ public function loadConfiguration()
 		foreach ($bundles as $name => $params) {
 			$bundle = $builder->addDefinition($this->prefix('bundle.'.$name))
 				->setFactory(AssetBundle::class, [$name])
-				->addSetup('setExtendBundle', [$params->extend])
-				->addSetup('setCookieConsent', [$params->cookieConsent])
-				->addSetup('setJoinFiles', [$params->joinFiles])
-				->addSetup('setDeferred', [$params->defer]);
+				->addSetup('setExtendBundle', [$params->extend ?? null])
+				->addSetup('setCookieConsent', [$params->cookieConsent ?? null])
+				->addSetup('setJoinFiles', [$params->joinFiles ?? false])
+				->addSetup('setDeferred', [$params->defer ?? false]);
 
 			foreach ($params->assets as $file) {
 				$bundle->addSetup('discoverAsset', [$file]);