diff --git a/Userland/Applications/HexEditor/main.cpp b/Userland/Applications/HexEditor/main.cpp
index ade8c15f23..4ae7ffe91a 100644
--- a/Userland/Applications/HexEditor/main.cpp
+++ b/Userland/Applications/HexEditor/main.cpp
@@ -2,12 +2,14 @@
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
  * Copyright (c) 2021, Mustafa Quraish <mustafa@serenityos.org>
  * Copyright (c) 2021, Conor Byrne <conor@cbyrne.dev>
+ * Copyright (c) 2024, Sam Atkins <atkinssj@serenityos.org>
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
 #include "HexEditorWidget.h"
 #include <LibConfig/Client.h>
+#include <LibCore/ArgsParser.h>
 #include <LibCore/System.h>
 #include <LibDesktop/Launcher.h>
 #include <LibFileSystemAccessClient/Client.h>
@@ -24,6 +26,12 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
 
     auto app = TRY(GUI::Application::create(arguments));
 
+    StringView filename;
+
+    Core::ArgsParser args_parser;
+    args_parser.add_positional_argument(filename, "File to open", "path", Core::ArgsParser::Required::No);
+    args_parser.parse(arguments);
+
     TRY(Desktop::Launcher::add_allowed_handler_with_only_specific_urls("/bin/Help", { URL::create_with_file_scheme("/usr/share/man/man1/Applications/HexEditor.md") }));
     TRY(Desktop::Launcher::seal_allowlist());
 
@@ -54,9 +62,9 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
     window->show();
     window->set_icon(app_icon.bitmap_for_size(16));
 
-    if (arguments.argc > 1) {
+    if (!filename.is_empty()) {
         // FIXME: Using `try_request_file_read_only_approved` doesn't work here since the file stored in the editor is only readable.
-        auto response = FileSystemAccessClient::Client::the().request_file(window, arguments.strings[1], Core::File::OpenMode::ReadWrite);
+        auto response = FileSystemAccessClient::Client::the().request_file(window, filename, Core::File::OpenMode::ReadWrite);
         if (!response.is_error())
             hex_editor_widget->open_file(response.value().filename(), response.value().release_stream());
     }