diff --git a/OpenRa.Game/Traits/Helicopter.cs b/OpenRa.Game/Traits/Helicopter.cs
index 27d6143c8b..999bc6a68f 100644
--- a/OpenRa.Game/Traits/Helicopter.cs
+++ b/OpenRa.Game/Traits/Helicopter.cs
@@ -4,6 +4,11 @@ using OpenRa.Game.GameRules;
 
 namespace OpenRa.Game.Traits
 {
+	class HelicopterInfo : ITraitInfo
+	{
+		public object Create(Actor self) { return new Helicopter(self); }
+	}
+
 	class Helicopter : IIssueOrder, IResolveOrder, IMovement
 	{
 		public IDisposable reservation;
diff --git a/OpenRa.Game/Traits/InvisibleToOthers.cs b/OpenRa.Game/Traits/InvisibleToOthers.cs
index 46491a6766..969dc31d68 100644
--- a/OpenRa.Game/Traits/InvisibleToOthers.cs
+++ b/OpenRa.Game/Traits/InvisibleToOthers.cs
@@ -2,6 +2,11 @@
 
 namespace OpenRa.Game.Traits
 {
+	class InvisibleToOthersInfo : ITraitInfo
+	{
+		public object Create(Actor self) { return new InvisibleToOthers(self); }
+	}
+
 	class InvisibleToOthers : IRenderModifier
 	{
 		public InvisibleToOthers(Actor self) { }
diff --git a/OpenRa.Game/Traits/IronCurtain.cs b/OpenRa.Game/Traits/IronCurtain.cs
index 668b469bd1..8126493e6e 100644
--- a/OpenRa.Game/Traits/IronCurtain.cs
+++ b/OpenRa.Game/Traits/IronCurtain.cs
@@ -5,6 +5,11 @@ using System.Text;
 
 namespace OpenRa.Game.Traits
 {
+	class IronCurtainInfo : ITraitInfo
+	{
+		public object Create(Actor self) { return new IronCurtain(self); }
+	}
+
 	class IronCurtain
 	{
 		public IronCurtain(Actor self) {}
diff --git a/OpenRa.Game/Traits/Mobile.cs b/OpenRa.Game/Traits/Mobile.cs
index 3f753ac289..0e0efe835b 100644
--- a/OpenRa.Game/Traits/Mobile.cs
+++ b/OpenRa.Game/Traits/Mobile.cs
@@ -10,6 +10,7 @@ namespace OpenRa.Game.Traits
 		public readonly int Sight = 0;
 		public readonly int ROT = 0;
 		public readonly int Speed = 0;
+
 		public object Create(Actor self) { return new Mobile(self); }
 	}
 
diff --git a/OpenRa.Game/Traits/Plane.cs b/OpenRa.Game/Traits/Plane.cs
index 6b5c9827a3..cd4af54edd 100644
--- a/OpenRa.Game/Traits/Plane.cs
+++ b/OpenRa.Game/Traits/Plane.cs
@@ -6,6 +6,11 @@ using OpenRa.Game.Traits.Activities;
 
 namespace OpenRa.Game.Traits
 {
+	class PlaneInfo : ITraitInfo
+	{
+		public object Create(Actor self) { return new Plane(self); }
+	}
+
 	class Plane : IIssueOrder, IResolveOrder, IMovement
 	{
 		public IDisposable reservation;