diff --git a/src/EffectHost.cs b/src/EffectHost.cs
index 3969127..4543ae3 100644
--- a/src/EffectHost.cs
+++ b/src/EffectHost.cs
@@ -187,7 +187,7 @@ public void Dispose()
         window?.Dispose();
         outputSignal.Dispose();
 
-        var state = PluginState.From(component, controller);
+        var state = PluginState.From(plugProvider.ClassInfo.ID, component, controller);
         var statePin = (StatePin)Inputs[0];
         var channel = statePin.Value;
         if (channel.IsValid())
@@ -213,15 +213,18 @@ private static bool Acknowledge<T>(ref T current, T value)
 
     public void Update()
     {
-        if (Acknowledge(ref state, ((StatePin)Inputs[0]).Value?.Value) && state != null)
+        if (Acknowledge(ref state, ((StatePin)Inputs[0]).Value?.Value))
         {
-            if (state.HasComponentData)
-            { 
-                component.IgnoreNotImplementedException(c => c.setState(state.GetComponentStream()));
-                controller?.IgnoreNotImplementedException(c => c.setComponentState(state.GetComponentStream()));
+            if (state != null && state.Id == plugProvider.ClassInfo.ID)
+            {
+                if (state.HasComponentData)
+                {
+                    component.IgnoreNotImplementedException(c => c.setState(state.GetComponentStream()));
+                    controller?.IgnoreNotImplementedException(c => c.setComponentState(state.GetComponentStream()));
+                }
+                if (state.HasControllerData)
+                    controller?.IgnoreNotImplementedException(c => c.setState(state.GetControllerStream()));
             }
-            if (state.HasControllerData)
-                controller?.IgnoreNotImplementedException(c => c.setState(state.GetControllerStream()));
         }
 
         if (Acknowledge(ref midiInput, midiInputPin.Value))
diff --git a/src/PluginState.cs b/src/PluginState.cs
index 5d57f6a..b9aee4f 100644
--- a/src/PluginState.cs
+++ b/src/PluginState.cs
@@ -6,9 +6,9 @@
 
 namespace VL.Audio.VST;
 
-public record PluginState(ImmutableArray<byte> Component, ImmutableArray<byte> Controller)
+public record PluginState(Guid Id, ImmutableArray<byte> Component, ImmutableArray<byte> Controller)
 {
-    public static readonly PluginState Default = new PluginState(ImmutableArray<byte>.Empty, ImmutableArray<byte>.Empty);
+    public static readonly PluginState Default = new PluginState(default, ImmutableArray<byte>.Empty, ImmutableArray<byte>.Empty);
 
     internal bool HasComponentData => Component.Length > 0;
     internal bool HasControllerData => Controller.Length > 0;
@@ -27,12 +27,12 @@ private IBStream GetStream(ImmutableArray<byte> bytes)
         return new BStreamAdapter(memoryStream);
     }
 
-    internal static PluginState From(IComponent component, IEditController? controller)
+    internal static PluginState From(Guid id, IComponent component, IEditController? controller)
     {
         var memoryStream = new MemoryStream();
         var componentState = Read(s => component.getState(s));
         var controllerState = Read(s => controller?.getState(s));
-        return new PluginState(componentState, controllerState);
+        return new PluginState(id, componentState, controllerState);
 
         ImmutableArray<byte> Read(Action<IBStream> reader)
         {
@@ -58,6 +58,7 @@ internal sealed class Serializer : ISerializer<PluginState>
         public PluginState Deserialize(SerializationContext context, object content, Type type)
         {
             return new PluginState(
+                context.Deserialize<Guid>(content, nameof(Id)),
                 context.Deserialize<ImmutableArray<byte>>(content, nameof(Component)),
                 context.Deserialize<ImmutableArray<byte>>(content, nameof(Controller)));
         }
@@ -66,6 +67,7 @@ public object Serialize(SerializationContext context, PluginState value)
         {
             return new object[]
             {
+                context.Serialize(nameof(Id), value.Id),
                 context.Serialize(nameof(Component), value.Component),
                 context.Serialize(nameof(Controller), value.Controller)
             };