diff --git a/tests/Utils/FileSystem.phpt b/tests/Utils/FileSystem.phpt
index cf4dbcb3e..fe8a34d64 100644
--- a/tests/Utils/FileSystem.phpt
+++ b/tests/Utils/FileSystem.phpt
@@ -13,6 +13,23 @@ use Tester\Assert;
 require __DIR__ . '/../bootstrap.php';
 
 
+class RemoteStream /* extends \streamWrapper */
+{
+	public function stream_open()
+	{
+		return true;
+	}
+
+
+	public function url_stat()
+	{
+		return false;
+	}
+}
+
+stream_wrapper_register('remote', RemoteStream::class, STREAM_IS_URL);
+
+
 test(function () { // createDir
 	FileSystem::createDir(TEMP_DIR . '/1/b/');
 	Assert::true(is_dir(TEMP_DIR . '/1/b'));
diff --git a/tests/bootstrap.php b/tests/bootstrap.php
index fa497c189..ff6310093 100644
--- a/tests/bootstrap.php
+++ b/tests/bootstrap.php
@@ -26,20 +26,3 @@ function test(\Closure $function)
 {
 	$function();
 }
-
-
-class RemoteStream /* extends \streamWrapper */
-{
-	public function stream_open()
-	{
-		return true;
-	}
-
-
-	public function url_stat()
-	{
-		return false;
-	}
-}
-
-stream_wrapper_register('remote', RemoteStream::class, STREAM_IS_URL);