diff --git a/test/pantallas/pantalla_alarmas_tier5_test.dart b/test/pantallas/pantalla_alarmas_tier5_test.dart
index 176e83e..f05b34c 100644
--- a/test/pantallas/pantalla_alarmas_tier5_test.dart
+++ b/test/pantallas/pantalla_alarmas_tier5_test.dart
@@ -2,6 +2,7 @@ import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:pluriwave/estado/estado_alarmas.dart';
 import 'package:pluriwave/estado/estado_radio.dart';
+import 'package:pluriwave/l10n/formato_fechas.dart';
 import 'package:pluriwave/l10n/gen/app_localizations.dart';
 import 'package:pluriwave/modelos/alarma_musical.dart';
 import 'package:pluriwave/modelos/emisora.dart';
@@ -137,16 +138,29 @@ void main() {
     ) async {
       final estado = crearEstado();
       addTearDown(estado.dispose);
+      // The pill only renders for the ACTIVE or NEXT range
+      // (`EstadoAlarmas.vacacionesProximas` keeps `inicioDia.isAfter(hoy)`), so
+      // the range has to be in the future RELATIVE TO THE RUN. Hardcoded
+      // calendar dates silently rot into the past and turn this into a
+      // date-dependent failure; anchor on next month instead, days 4-18 so the
+      // range never straddles a month boundary and the label stays "d–d MON".
+      final ahora = DateTime.now();
+      final mesSiguiente = DateTime(ahora.year, ahora.month + 1);
+      final inicio = DateTime(mesSiguiente.year, mesSiguiente.month, 4);
+      final fin = DateTime(mesSiguiente.year, mesSiguiente.month, 18);
       await estado.crearRangoVacaciones(
         estado.servicio.crearRangoVacaciones(
-          inicio: DateTime(2026, 8, 4),
-          fin: DateTime(2026, 8, 18),
+          inicio: inicio,
+          fin: fin,
           nombre: 'Summer',
         ),
       );
       await montar(tester, estadoAlarmas: estado);
 
-      expect(find.text('4–18 AUG'), findsOneWidget);
+      // Assert against the same pure formatter the widget uses, so this stays
+      // a check that the pill IS rendered in the right shape rather than a
+      // duplicate of the formatter's own logic.
+      expect(find.text(rangoFechasCorto('en', inicio, fin)), findsOneWidget);
     });
   });