diff --git a/lib/src/Connection.dart b/lib/src/Connection.dart
index e0ece74a..9b5fd3b7 100644
--- a/lib/src/Connection.dart
+++ b/lib/src/Connection.dart
@@ -44,10 +44,9 @@ class Connection {
     }));
   }
 
-  String get _syncFilters => Uri.encodeFull(
-      "{\"room\":{\"state\":{\"lazy_load_members\":${client.lazyLoadMembers ? "1" : "0"}}}");
-  String get _firstSyncFilters => Uri.encodeFull(
-      "{\"room\":{\"include_leave\":1,\"state\":{\"lazy_load_members\":${client.lazyLoadMembers ? "1" : "0"}}}");
+  String get _syncFilters => '{"room":{"state":{"lazy_load_members":true}}}';
+  String get _firstSyncFilters =>
+      '{"room":{"include_leave":true,"state":{"lazy_load_members":true}}}';
 
   /// Handles the connection to the Matrix Homeserver. You can change this to a
   /// MockClient for testing.
@@ -251,10 +250,10 @@ class Connection {
   Future<void> _sync() async {
     if (client.isLogged() == false) return;
 
-    String action = "/client/r0/sync?filters=$_firstSyncFilters";
+    String action = "/client/r0/sync?filter=$_firstSyncFilters";
 
     if (client.prevBatch != null) {
-      action = "/client/r0/sync?filters=$_syncFilters";
+      action = "/client/r0/sync?filter=$_syncFilters";
       action += "&timeout=30000";
       action += "&since=${client.prevBatch}";
     }