diff --git a/mobile/lib/infrastructure/repositories/sync_stream.repository.dart b/mobile/lib/infrastructure/repositories/sync_stream.repository.dart
index ee859cc2dd..b7593c3202 100644
--- a/mobile/lib/infrastructure/repositories/sync_stream.repository.dart
+++ b/mobile/lib/infrastructure/repositories/sync_stream.repository.dart
@@ -14,6 +14,7 @@ import 'package:immich_mobile/infrastructure/entities/asset_edit.entity.drift.da
 import 'package:immich_mobile/infrastructure/entities/asset_face.entity.drift.dart';
 import 'package:immich_mobile/infrastructure/entities/auth_user.entity.drift.dart';
 import 'package:immich_mobile/infrastructure/entities/exif.entity.drift.dart';
+import 'package:immich_mobile/infrastructure/entities/local_album.entity.drift.dart';
 import 'package:immich_mobile/infrastructure/entities/memory.entity.drift.dart';
 import 'package:immich_mobile/infrastructure/entities/memory_asset.entity.drift.dart';
 import 'package:immich_mobile/infrastructure/entities/partner.entity.drift.dart';
@@ -45,25 +46,35 @@ class SyncStreamRepository extends DriftDatabaseRepository {
         // foreign_keys PRAGMA is no-op within transactions
         // https://www.sqlite.org/pragma.html#pragma_foreign_keys
         await _db.customStatement('PRAGMA foreign_keys = OFF');
-        await transaction(() async {
-          await _db.assetFaceEntity.deleteAll();
-          await _db.memoryAssetEntity.deleteAll();
-          await _db.memoryEntity.deleteAll();
-          await _db.partnerEntity.deleteAll();
-          await _db.personEntity.deleteAll();
-          await _db.remoteAlbumAssetEntity.deleteAll();
-          await _db.remoteAlbumEntity.deleteAll();
-          await _db.remoteAlbumUserEntity.deleteAll();
-          await _db.remoteAssetEntity.deleteAll();
-          await _db.remoteExifEntity.deleteAll();
-          await _db.stackEntity.deleteAll();
-          await _db.authUserEntity.deleteAll();
-          await _db.userEntity.deleteAll();
-          await _db.userMetadataEntity.deleteAll();
-          await _db.remoteAssetCloudIdEntity.deleteAll();
-          await _db.assetEditEntity.deleteAll();
-        });
-        await _db.customStatement('PRAGMA foreign_keys = ON');
+        try {
+          await transaction(() async {
+            // FK cascade (ON DELETE SET NULL) does not fire while foreign_keys = OFF,
+            // so null linkedRemoteAlbumId manually to avoid dangling pointers in local_album_entity.
+            await _db.localAlbumEntity.update().write(
+              const LocalAlbumEntityCompanion(linkedRemoteAlbumId: Value(null)),
+            );
+            await _db.assetFaceEntity.deleteAll();
+            await _db.memoryAssetEntity.deleteAll();
+            await _db.memoryEntity.deleteAll();
+            await _db.partnerEntity.deleteAll();
+            await _db.personEntity.deleteAll();
+            await _db.remoteAlbumAssetEntity.deleteAll();
+            await _db.remoteAlbumEntity.deleteAll();
+            await _db.remoteAlbumUserEntity.deleteAll();
+            await _db.remoteAssetEntity.deleteAll();
+            await _db.remoteExifEntity.deleteAll();
+            await _db.stackEntity.deleteAll();
+            await _db.authUserEntity.deleteAll();
+            await _db.userEntity.deleteAll();
+            await _db.userMetadataEntity.deleteAll();
+            await _db.remoteAssetCloudIdEntity.deleteAll();
+            await _db.assetEditEntity.deleteAll();
+          });
+        } finally {
+          // re-enable FK even if the transaction throws, otherwise the connection
+          // would be left with foreign_keys = OFF, silently disabling cascades.
+          await _db.customStatement('PRAGMA foreign_keys = ON');
+        }
       });
     } catch (error, stack) {
       _logger.severe('Error: SyncResetV1', error, stack);
diff --git a/mobile/test/domain/repositories/sync_stream_repository_test.dart b/mobile/test/domain/repositories/sync_stream_repository_test.dart
index 39d6d9156e..4199a5b756 100644
--- a/mobile/test/domain/repositories/sync_stream_repository_test.dart
+++ b/mobile/test/domain/repositories/sync_stream_repository_test.dart
@@ -1,6 +1,10 @@
 import 'package:drift/drift.dart' as drift;
 import 'package:drift/native.dart';
 import 'package:flutter_test/flutter_test.dart';
+import 'package:immich_mobile/domain/models/album/album.model.dart';
+import 'package:immich_mobile/domain/models/album/local_album.model.dart';
+import 'package:immich_mobile/infrastructure/entities/local_album.entity.drift.dart';
+import 'package:immich_mobile/infrastructure/entities/remote_album.entity.drift.dart';
 import 'package:immich_mobile/infrastructure/repositories/db.repository.dart';
 import 'package:immich_mobile/infrastructure/repositories/sync_stream.repository.dart';
 import 'package:openapi/api.dart';
@@ -184,4 +188,56 @@ void main() {
       expect(result.height, equals(existingHeight), reason: 'Height should remain as originally set');
     });
   });
+
+  group('SyncStreamRepository - reset()', () {
+    test('nulls linkedRemoteAlbumId on localAlbumEntity so FK refs do not dangle', () async {
+      const localAlbumId = 'local-1';
+      const remoteAlbumId = 'remote-1';
+
+      await db.remoteAlbumEntity.insertOne(
+        RemoteAlbumEntityCompanion.insert(id: remoteAlbumId, name: 'Movies', order: AlbumAssetOrder.desc),
+      );
+      await db.localAlbumEntity.insertOne(
+        LocalAlbumEntityCompanion.insert(
+          id: localAlbumId,
+          name: 'Movies',
+          backupSelection: BackupSelection.selected,
+          linkedRemoteAlbumId: const drift.Value(remoteAlbumId),
+        ),
+      );
+
+      // sanity: link is set before reset
+      final before = await (db.localAlbumEntity.select()..where((t) => t.id.equals(localAlbumId))).getSingle();
+      expect(before.linkedRemoteAlbumId, equals(remoteAlbumId));
+
+      await sut.reset();
+
+      final after = await (db.localAlbumEntity.select()..where((t) => t.id.equals(localAlbumId))).getSingle();
+      expect(
+        after.linkedRemoteAlbumId,
+        isNull,
+        reason:
+            'reset() runs with PRAGMA foreign_keys = OFF so the ON DELETE SET NULL cascade does not fire — the link must be nulled manually',
+      );
+      expect(after.name, equals('Movies'), reason: 'local album row itself must be preserved');
+      expect(after.backupSelection, equals(BackupSelection.selected));
+
+      final remoteRows = await db.remoteAlbumEntity.select().get();
+      expect(remoteRows, isEmpty, reason: 'reset() still wipes remoteAlbumEntity');
+    });
+
+    test('preserves localAlbumEntity rows that have no linkedRemoteAlbumId', () async {
+      const localAlbumId = 'local-unlinked';
+      await db.localAlbumEntity.insertOne(
+        LocalAlbumEntityCompanion.insert(id: localAlbumId, name: 'Camera', backupSelection: BackupSelection.none),
+      );
+
+      await sut.reset();
+
+      final after = await (db.localAlbumEntity.select()..where((t) => t.id.equals(localAlbumId))).getSingle();
+      expect(after.linkedRemoteAlbumId, isNull);
+      expect(after.name, equals('Camera'));
+      expect(after.backupSelection, equals(BackupSelection.none));
+    });
+  });
 }