diff --git a/OpenRA.Game/Graphics/WorldRenderer.cs b/OpenRA.Game/Graphics/WorldRenderer.cs
index fb33bd894f..9280b65dd8 100644
--- a/OpenRA.Game/Graphics/WorldRenderer.cs
+++ b/OpenRA.Game/Graphics/WorldRenderer.cs
@@ -94,10 +94,9 @@ namespace OpenRA.Graphics
                 image.Sprite.DrawAt(image.Pos, this.GetPaletteIndex(image.Palette), image.Scale);
 
 			// added for contrails
-			foreach (var a in world.Actors)
-				if (!a.Destroyed)
-					foreach (var t in a.TraitsImplementing<IPostRender>())
-						t.RenderAfterWorld(this, a);
+			foreach (var a in world.ActorsWithTrait<IPostRender>())
+				if (!a.Actor.Destroyed)
+					a.Trait.RenderAfterWorld(this, a.Actor);
 
 			if (world.OrderGenerator != null)
 				world.OrderGenerator.RenderAfterWorld(this, world);