diff --git a/mobile/lib/utils/option.dart b/mobile/lib/utils/option.dart
index 326b60cb39..4824d9c507 100644
--- a/mobile/lib/utils/option.dart
+++ b/mobile/lib/utils/option.dart
@@ -29,13 +29,9 @@ sealed class Option<T> {
     None() => const Option.none(),
   };
 
-  void ifSome(void Function(T value) action) {
-    switch (this) {
-      case Some(:final value):
-        action(value);
-        break;
-      case None():
-        break;
+  void ifPresent(void Function(T value) f) {
+    if (this case Some(:final value)) {
+      f(value);
     }
   }
 
diff --git a/mobile/lib/widgets/map/map_settings/map_custom_time_range.dart b/mobile/lib/widgets/map/map_settings/map_custom_time_range.dart
index 2dc0cdaea4..35d218b0ca 100644
--- a/mobile/lib/widgets/map/map_settings/map_custom_time_range.dart
+++ b/mobile/lib/widgets/map/map_settings/map_custom_time_range.dart
@@ -19,7 +19,10 @@ class MapTimeRange extends StatelessWidget {
         ListTile(
           title: Text(context.t.date_after),
           subtitle: Text(
-            timeRange.from.fold((from) => DateFormat.yMMMd().add_jm().format(from), () => context.t.not_set),
+            timeRange.from.fold(
+              (from) => DateFormat.yMMMd(context.locale).add_jm().format(from),
+              () => context.t.not_set,
+            ),
           ),
           trailing: timeRange.from.isSome
               ? IconButton(icon: const Icon(Icons.close), onPressed: () => onChanged(timeRange.clearFrom()))
@@ -43,7 +46,10 @@ class MapTimeRange extends StatelessWidget {
         ListTile(
           title: Text(context.t.date_before),
           subtitle: Text(
-            timeRange.to.fold<String>((to) => DateFormat.yMMMd().add_jm().format(to), () => context.t.not_set),
+            timeRange.to.fold<String>(
+              (to) => DateFormat.yMMMd(context.locale).add_jm().format(to),
+              () => context.t.not_set,
+            ),
           ),
           trailing: timeRange.to.isSome
               ? IconButton(icon: const Icon(Icons.close), onPressed: () => onChanged(timeRange.clearTo()))