diff --git a/Userland/Applications/Calendar/CMakeLists.txt b/Userland/Applications/Calendar/CMakeLists.txt
index 0d43f6f19f..75cf0bec4b 100644
--- a/Userland/Applications/Calendar/CMakeLists.txt
+++ b/Userland/Applications/Calendar/CMakeLists.txt
@@ -19,4 +19,4 @@ set(GENERATED_SOURCES
 )
 
 serenity_app(Calendar ICON app-calendar)
-target_link_libraries(Calendar PRIVATE LibConfig LibCore LibFileSystem LibFileSystemAccessClient LibGfx LibGUI LibMain)
+target_link_libraries(Calendar PRIVATE LibConfig LibCore LibFileSystem LibFileSystemAccessClient LibGfx LibGUI LibMain LibDesktop)
diff --git a/Userland/Applications/Calendar/CalendarWidget.cpp b/Userland/Applications/Calendar/CalendarWidget.cpp
index 20668ebcb4..68b7c6a48c 100644
--- a/Userland/Applications/Calendar/CalendarWidget.cpp
+++ b/Userland/Applications/Calendar/CalendarWidget.cpp
@@ -11,6 +11,7 @@
 #include <Applications/Calendar/CalendarWindowGML.h>
 #include <LibConfig/Client.h>
 #include <LibCore/System.h>
+#include <LibDesktop/Launcher.h>
 #include <LibGUI/Action.h>
 #include <LibGUI/ActionGroup.h>
 #include <LibGUI/Application.h>
@@ -105,6 +106,9 @@ ErrorOr<NonnullRefPtr<CalendarWidget>> CalendarWidget::create(GUI::Window* paren
 
     auto help_menu = parent_window->add_menu("&Help"_string);
     help_menu->add_action(GUI::CommonActions::make_command_palette_action(parent_window));
+    help_menu->add_action(GUI::CommonActions::make_help_action([](auto&) {
+        Desktop::Launcher::open(URL::create_with_file_scheme("/usr/share/man/man1/Applications/Calendar.md"sv), "/bin/Help");
+    }));
     help_menu->add_action(GUI::CommonActions::make_about_action("Calendar"_string, TRY(GUI::Icon::try_create_default_icon("app-calendar"sv)), parent_window));
 
     return widget;
diff --git a/Userland/Applications/Calendar/main.cpp b/Userland/Applications/Calendar/main.cpp
index 2f8e67b28a..1039c0bb96 100644
--- a/Userland/Applications/Calendar/main.cpp
+++ b/Userland/Applications/Calendar/main.cpp
@@ -4,7 +4,6 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
-#include "AddEventDialog.h"
 #include "CalendarWidget.h"
 #include <LibConfig/Client.h>
 #include <LibCore/ArgsParser.h>
@@ -55,6 +54,7 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
     TRY(Core::System::unveil("/res", "r"));
     TRY(Core::System::unveil("/bin/CalendarSettings", "x"));
     TRY(Core::System::unveil("/tmp/session/%sid/portal/filesystemaccess", "rw"));
+    TRY(Core::System::unveil("/tmp/session/%sid/portal/launch", "rw"));
     TRY(Core::System::unveil(nullptr, nullptr));
 
     auto app_icon = TRY(GUI::Icon::try_create_default_icon("app-calendar"sv));