diff --git a/Engine.Core/Universe.cs b/Engine.Core/Universe.cs
index 49cc883..8e3c28f 100644
--- a/Engine.Core/Universe.cs
+++ b/Engine.Core/Universe.cs
@@ -131,9 +131,10 @@ public class Universe : BaseEntity, IUniverse
         UnscaledTime = engineTime;
         Time = new(TimeSpan.FromTicks((long)(Time.TimeSinceStart.Ticks + engineTime.DeltaSpan.Ticks * TimeScale)), TimeSpan.FromTicks((long)(engineTime.DeltaSpan.Ticks * TimeScale)));
 
-        OnPreUpdate?.Invoke(this, new(Time));
-        OnUpdate?.Invoke(this, new(Time));
-        OnPostUpdate?.Invoke(this, new(Time));
+        IUniverse.UpdateArguments args = new(Time);
+        OnPreUpdate?.Invoke(this, args);
+        OnUpdate?.Invoke(this, args);
+        OnPostUpdate?.Invoke(this, args);
     }
 
     public void Draw()
diff --git a/Engine.Core/UniverseTime.cs b/Engine.Core/UniverseTime.cs
index 505fa77..460ed8a 100644
--- a/Engine.Core/UniverseTime.cs
+++ b/Engine.Core/UniverseTime.cs
@@ -2,7 +2,7 @@ using System;
 
 namespace Engine.Core;
 
-public readonly struct UniverseTime(TimeSpan TimeSinceStart, TimeSpan TimeDelta)
+public readonly record struct UniverseTime(TimeSpan TimeSinceStart, TimeSpan TimeDelta)
 {
     public readonly TimeSpan TimeSinceStart = TimeSinceStart;
     public readonly TimeSpan DeltaSpan = TimeDelta;