diff --git a/Source/MQTTnet.AspnetCore/MqttConnectionContext.cs b/Source/MQTTnet.AspnetCore/MqttConnectionContext.cs
index 56c094c0..1b54ef55 100644
--- a/Source/MQTTnet.AspnetCore/MqttConnectionContext.cs
+++ b/Source/MQTTnet.AspnetCore/MqttConnectionContext.cs
@@ -107,7 +107,7 @@ namespace MQTTnet.AspNetCore
 
         public async Task SendPacketAsync(MqttBasePacket packet, CancellationToken cancellationToken)
         {
-            var buffer = PacketSerializer.Serialize(packet).AsMemory();
+            var buffer = PacketSerializerAdapter.Serialize(packet).AsMemory();
             var output = Connection.Transport.Output;
 
             await _writerSemaphore.WaitAsync(cancellationToken).ConfigureAwait(false);
diff --git a/Tests/MQTTnet.AspNetCore.Tests/MqttConnectionContextTest.cs b/Tests/MQTTnet.AspNetCore.Tests/MqttConnectionContextTest.cs
index 699aa65b..2ec621de 100644
--- a/Tests/MQTTnet.AspNetCore.Tests/MqttConnectionContextTest.cs
+++ b/Tests/MQTTnet.AspNetCore.Tests/MqttConnectionContextTest.cs
@@ -17,7 +17,7 @@ namespace MQTTnet.AspNetCore.Tests
         [TestMethod]
         public async Task TestReceivePacketAsyncThrowsWhenReaderCompleted()
         {
-            var serializer = new MqttPacketSerializer {};
+            var serializer = new MqttPacketSerializerAdapter(MqttProtocolVersion.V311);
             var pipe = new DuplexPipeMockup();
             var connection = new DefaultConnectionContext();
             connection.Transport = pipe;
@@ -31,7 +31,7 @@ namespace MQTTnet.AspNetCore.Tests
         [TestMethod]
         public async Task TestParallelWrites()
         {
-            var serializer = new MqttPacketSerializer { };
+            var serializer = new MqttPacketSerializerAdapter(MqttProtocolVersion.V311);
             var pipe = new DuplexPipeMockup();
             var connection = new DefaultConnectionContext();
             connection.Transport = pipe;