diff --git a/server/lib/src/compositions.dart b/server/lib/src/compositions.dart
index 09ad6e7..d67eb7f 100644
--- a/server/lib/src/compositions.dart
+++ b/server/lib/src/compositions.dart
@@ -8,7 +8,7 @@ class CompositionsController extends ResourceController {
 
   @Operation.get('id')
   Future<Response> getWorks(@Bind.path('id') int id,
-      [@Bind.query('p') int page, @Bind.query('s') String search]) async {
+      {@Bind.query('p') int page, @Bind.query('s') String search}) async {
     final works = await db.getWorks(id, page, search);
     return Response.ok(works);
   }
diff --git a/server/lib/src/ensembles.dart b/server/lib/src/ensembles.dart
index 92f5241..d827c0a 100644
--- a/server/lib/src/ensembles.dart
+++ b/server/lib/src/ensembles.dart
@@ -8,7 +8,7 @@ class EnsemblesController extends ResourceController {
 
   @Operation.get()
   Future<Response> getEnsembles(
-      [@Bind.query('p') int page, @Bind.query('s') String search]) async {
+      {@Bind.query('p') int page, @Bind.query('s') String search}) async {
     final ensembles = await db.getEnsembles(page, search);
     return Response.ok(ensembles);
   }
diff --git a/server/lib/src/instruments.dart b/server/lib/src/instruments.dart
index e7cd85f..946df37 100644
--- a/server/lib/src/instruments.dart
+++ b/server/lib/src/instruments.dart
@@ -8,7 +8,7 @@ class InstrumentsController extends ResourceController {
 
   @Operation.get()
   Future<Response> getInstruments(
-      [@Bind.query('p') int page, @Bind.query('s') String search]) async {
+      {@Bind.query('p') int page, @Bind.query('s') String search}) async {
     final instruments = await db.getInstruments(page, search);
     return Response.ok(instruments);
   }
diff --git a/server/lib/src/persons.dart b/server/lib/src/persons.dart
index b9fdd7b..e4f6261 100644
--- a/server/lib/src/persons.dart
+++ b/server/lib/src/persons.dart
@@ -8,7 +8,7 @@ class PersonsController extends ResourceController {
 
   @Operation.get()
   Future<Response> getPersons(
-      [@Bind.query('p') int page, @Bind.query('s') String search]) async {
+      {@Bind.query('p') int page, @Bind.query('s') String search}) async {
     final persons = await db.getPersons(page, search);
     return Response.ok(persons);
   }
diff --git a/server/lib/src/work_recordings.dart b/server/lib/src/work_recordings.dart
index 710ebbe..80eb741 100644
--- a/server/lib/src/work_recordings.dart
+++ b/server/lib/src/work_recordings.dart
@@ -8,7 +8,7 @@ class WorkRecordingsController extends ResourceController {
 
   @Operation.get('id')
   Future<Response> getRecordings(@Bind.path('id') int id,
-      [@Bind.query('p') int page]) async {
+      {@Bind.query('p') int page}) async {
     final recordings = await db.getRecordings(id, page);
     return Response.ok(recordings);
   }