--- a/src/relpipe-in-filesystem.cpp	Sun Jan 19 18:41:32 2020 +0100
+++ b/src/relpipe-in-filesystem.cpp	Mon Jan 20 12:39:22 2020 +0100
@@ -30,6 +30,7 @@
 #include <relpipe/cli/RelpipeCLIException.h>
 
 #include "FilesystemCommand.h"
+#include "ParallelFilesystemCommand.h"
 #include "CLIParser.h"
 
 using namespace relpipe::cli;
@@ -46,8 +47,10 @@
 	try {
 		CLIParser cliParser;
 		Configuration configuration = cliParser.parse(cli.arguments());
-		FilesystemCommand command;
-		command.process(cin, cout, configuration);
+		std::unique_ptr<FilesystemCommandBase> command;
+		if (configuration.parallelism == 1) command = std::make_unique<FilesystemCommand>();
+		else command = std::make_unique<ParallelFilesystemCommand>();
+		command->process(cin, cout, configuration);
 		resultCode = CLI::EXIT_CODE_SUCCESS;
 	} catch (RelpipeWriterException e) {
 		fwprintf(stderr, L"Caught Writer exception: %ls\n", e.getMessge().c_str());