diff --git a/.changes/fix-macos-special-menu-functions.md b/.changes/fix-macos-special-menu-functions.md
new file mode 100644
index 00000000..4dff14b3
--- /dev/null
+++ b/.changes/fix-macos-special-menu-functions.md
@@ -0,0 +1,6 @@
+---
+"muda": patch
+---
+
+
+Fix `set_as_windows_menu_for_nsapp()` and `set_as_help_menu_for_nsapp()`
diff --git a/src/platform_impl/macos/mod.rs b/src/platform_impl/macos/mod.rs
index 141378ad..ef20f90c 100644
--- a/src/platform_impl/macos/mod.rs
+++ b/src/platform_impl/macos/mod.rs
@@ -664,18 +664,41 @@ impl MenuChild {
         show_context_menu(&self.ns_menu.as_ref().unwrap().1, view, position)
     }
 
-    pub fn set_as_windows_menu_for_nsapp(&self) {
-        let menu = &self.ns_menu.as_ref().unwrap().1;
-        let mtm = MainThreadMarker::from(&**menu);
+    fn find_menu_in_hierarchy(&self) -> Option<&NsMenuRef> {
+        let ns_menus = self.ns_menus.as_ref()?;
+
+        let mtm = MainThreadMarker::from(&*self.ns_menu.as_ref().unwrap().1);
         let app = NSApplication::sharedApplication(mtm);
-        unsafe { app.setWindowsMenu(Some(menu)) }
+        let main_menu = unsafe { app.mainMenu() };
+
+        // Find menu whose supermenu is the main menu, or use first available
+        ns_menus
+            .values()
+            .flatten()
+            .find(|ns_menu| {
+                main_menu.as_ref().is_some_and(|main| {
+                    unsafe { ns_menu.1.supermenu() }
+                        .as_ref()
+                        .is_some_and(|super_| Retained::as_ptr(super_) == Retained::as_ptr(main))
+                })
+            })
+            .or_else(|| ns_menus.values().flatten().next())
+    }
+
+    pub fn set_as_windows_menu_for_nsapp(&self) {
+        if let Some(ns_menu) = self.find_menu_in_hierarchy() {
+            let mtm = MainThreadMarker::from(&*ns_menu.1);
+            let app = NSApplication::sharedApplication(mtm);
+            unsafe { app.setWindowsMenu(Some(&ns_menu.1)) }
+        }
     }
 
     pub fn set_as_help_menu_for_nsapp(&self) {
-        let menu = &self.ns_menu.as_ref().unwrap().1;
-        let mtm = MainThreadMarker::from(&**menu);
-        let app = NSApplication::sharedApplication(mtm);
-        unsafe { app.setHelpMenu(Some(menu)) }
+        if let Some(ns_menu) = self.find_menu_in_hierarchy() {
+            let mtm = MainThreadMarker::from(&*ns_menu.1);
+            let app = NSApplication::sharedApplication(mtm);
+            unsafe { app.setHelpMenu(Some(&ns_menu.1)) }
+        }
     }
 
     pub fn ns_menu(&self) -> *mut std::ffi::c_void {
diff --git a/src/platform_impl/mod.rs b/src/platform_impl/mod.rs
index 17018a33..d3908f28 100644
--- a/src/platform_impl/mod.rs
+++ b/src/platform_impl/mod.rs
@@ -88,7 +88,7 @@ impl MenuItemKind {
         }
     }
 
-    pub(crate) fn child(&self) -> Ref<MenuChild> {
+    pub(crate) fn child(&self) -> Ref<'_, MenuChild> {
         match self {
             MenuItemKind::MenuItem(i) => i.inner.borrow(),
             MenuItemKind::Submenu(i) => i.inner.borrow(),
@@ -98,7 +98,7 @@ impl MenuItemKind {
         }
     }
 
-    pub(crate) fn child_mut(&self) -> RefMut<MenuChild> {
+    pub(crate) fn child_mut(&self) -> RefMut<'_, MenuChild> {
         match self {
             MenuItemKind::MenuItem(i) => i.inner.borrow_mut(),
             MenuItemKind::Submenu(i) => i.inner.borrow_mut(),