diff --git a/public_html/api-dispatch.php b/public_html/api-dispatch.php
index dc7066b0..ae325a0c 100644
--- a/public_html/api-dispatch.php
+++ b/public_html/api-dispatch.php
@@ -1,9 +1,8 @@
 <?php
 $start = microtime(true);
 
-define('DS', DIRECTORY_SEPARATOR);
-require_once(__DIR__ . DS . '..' . DS . 'vendor' . DS . 'autoload.php');
-require_once(__DIR__ . DS . '..' . DS . 'src' . DS . 'AutoLoader.php');
+require_once(__DIR__ . DIRECTORY_SEPARATOR . '..' . DIRECTORY_SEPARATOR . 'vendor' . DIRECTORY_SEPARATOR . 'autoload.php');
+require_once(__DIR__ . DIRECTORY_SEPARATOR . '..' . DIRECTORY_SEPARATOR . 'src' . DIRECTORY_SEPARATOR . 'AutoLoader.php');
 
 $dispatcher = \Szurubooru\Injector::get(\Szurubooru\Dispatcher::class);
 $dispatcher->run();
diff --git a/src/Helpers/InputReader.php b/src/Helpers/InputReader.php
index 43f616f2..d8b72ccb 100644
--- a/src/Helpers/InputReader.php
+++ b/src/Helpers/InputReader.php
@@ -6,7 +6,7 @@ final class InputReader
 	public function __construct()
 	{
 		$_PUT = [];
-		if ($_SERVER['REQUEST_METHOD'] == 'PUT')
+		if (isset($_SERVER['REQUEST_METHOD']) and $_SERVER['REQUEST_METHOD'] == 'PUT')
 			parse_str(file_get_contents('php://input'), $_PUT);
 
 		foreach ([$_GET, $_POST, $_PUT] as $source)
diff --git a/src/Injector.php b/src/Injector.php
index d6a41483..4f8b665f 100644
--- a/src/Injector.php
+++ b/src/Injector.php
@@ -7,9 +7,14 @@ final class Injector
 
 	public static function init()
 	{
+		$definitionsPath = __DIR__
+			. DIRECTORY_SEPARATOR . '..'
+			. DIRECTORY_SEPARATOR . 'src'
+			. DIRECTORY_SEPARATOR . 'di.php';
+
 		$builder = new \DI\ContainerBuilder();
 		$builder->setDefinitionCache(new \Doctrine\Common\Cache\ArrayCache());
-		$builder->addDefinitions(__DIR__ . DS . '..' . DS . 'src' . DS . 'di.php');
+		$builder->addDefinitions($definitionsPath);
 		self::$container = $builder->build();
 	}
 
diff --git a/src/di.php b/src/di.php
index d75b294a..290e8ce7 100644
--- a/src/di.php
+++ b/src/di.php
@@ -1,8 +1,8 @@
 <?php
 return [
 	\Szurubooru\Config::class => DI\object()->constructor([
-		__DIR__ . DS . '..' . DS . 'data' . DS . 'config.ini',
-		__DIR__ . DS . '..' . DS . 'data' . DS . 'local.ini']),
+		__DIR__ . DIRECTORY_SEPARATOR . '..' . DIRECTORY_SEPARATOR . 'data' . DIRECTORY_SEPARATOR . 'config.ini',
+		__DIR__ . DIRECTORY_SEPARATOR . '..' . DIRECTORY_SEPARATOR . 'data' . DIRECTORY_SEPARATOR . 'local.ini']),
 
 	\Szurubooru\ControllerRepository::class => DI\object()->constructor(DI\link('controllers')),
 
diff --git a/tests/ControllerRepositoryTest.php b/tests/ControllerRepositoryTest.php
new file mode 100644
index 00000000..debe8a1d
--- /dev/null
+++ b/tests/ControllerRepositoryTest.php
@@ -0,0 +1,16 @@
+<?php
+namespace Szurubooru\Tests;
+
+require_once __DIR__
+	. DIRECTORY_SEPARATOR . '..'
+	. DIRECTORY_SEPARATOR . 'vendor'
+	. DIRECTORY_SEPARATOR . 'autoload.php';
+
+class ControllerRepositoryTest extends \Szurubooru\Tests\AbstractTestCase
+{
+	public function testInjection()
+	{
+		$controllerRepository = \Szurubooru\Injector::get(\Szurubooru\ControllerRepository::class);
+		$this->assertNotEmpty($controllerRepository->getControllers());
+	}
+}