diff --git a/lib/pantallas/pantalla_alarma_sonando.dart b/lib/pantallas/pantalla_alarma_sonando.dart
index 91ad629..a8667f9 100644
--- a/lib/pantallas/pantalla_alarma_sonando.dart
+++ b/lib/pantallas/pantalla_alarma_sonando.dart
@@ -42,9 +42,14 @@ class _PantallaAlarmaSonandoState extends State<PantallaAlarmaSonando> {
   bool _audioFlutterConfirmado = false;
   bool _volumenMediaRestaurado = false;
 
+  // Captured while mounted: dispose() also restores the media volume, and by
+  // then the element is defunct, so context.read() would throw there.
+  late final EstadoAlarmas _estadoAlarmas;
+
   @override
   void initState() {
     super.initState();
+    _estadoAlarmas = context.read<EstadoAlarmas>();
     WidgetsBinding.instance.addPostFrameCallback((_) => _iniciarAlarma());
   }
 
@@ -164,7 +169,7 @@ class _PantallaAlarmaSonandoState extends State<PantallaAlarmaSonando> {
     if (_volumenMediaRestaurado) return;
     _volumenMediaRestaurado = true;
     try {
-      await context.read<EstadoAlarmas>().android.restaurarVolumenMedia();
+      await _estadoAlarmas.android.restaurarVolumenMedia();
     } catch (e) {
       debugPrint('[PluriWave][alarmas] restaurar volumen media fallo: $e');
     }
diff --git a/test/pantallas/pantalla_alarma_sonando_test.dart b/test/pantallas/pantalla_alarma_sonando_test.dart
index ed3ade6..205945b 100644
--- a/test/pantallas/pantalla_alarma_sonando_test.dart
+++ b/test/pantallas/pantalla_alarma_sonando_test.dart
@@ -228,4 +228,20 @@ void main() {
       expect(entorno.audio.volumenesAplicados, [0.05, 0.85]);
     });
   });
+
+  group('restore de volumen de medios con dispose como unico llamador', () {
+    testWidgets('desmontar la pantalla sin detener ni posponer restaura el '
+        'volumen exactamente una vez', (tester) async {
+      final entorno = await _montarPantalla(tester);
+
+      // Teardown that bypasses _detener()/_posponer() entirely: dispose()
+      // must work as a restore path on its own. Reading the BuildContext
+      // inside dispose() throws (the element is already defunct), so the
+      // port reference has to be captured while the widget is mounted.
+      await tester.pumpWidget(const SizedBox.shrink());
+      await tester.pumpAndSettle();
+
+      expect(entorno.android.volumenRestaurado, 1);
+    });
+  });
 }