diff --git a/userspace/Shell/main.cpp b/userspace/Shell/main.cpp
index 1cb4844dab..6b9c217141 100644
--- a/userspace/Shell/main.cpp
+++ b/userspace/Shell/main.cpp
@@ -331,6 +331,17 @@ BAN::Optional<int> execute_builtin(BAN::Vector<BAN::String>& args, int fd_in, in
 		while (*current)
 			fprintf(fout, "%s\n", *current++);
 	}
+	else if (args.front() == "start-gui"sv)
+	{
+		pid_t pid = fork();
+		if (pid == 0)
+			execl("/bin/WindowServer", "WindowServer", NULL);
+		if (fork() == 0)
+			execl("/bin/test-window", "test-window", NULL);
+		if (fork() == 0)
+			execl("/bin/test-window", "test-window", NULL);
+		waitpid(pid, nullptr, 0);
+	}
 	else if (args.front() == "page-fault-test"sv)
 	{
 		volatile int* ptr = nullptr;