diff --git a/OpenRA.Game/OpenRA.Game.csproj b/OpenRA.Game/OpenRA.Game.csproj
index 745d44996b..54fc1f72e4 100755
--- a/OpenRA.Game/OpenRA.Game.csproj
+++ b/OpenRA.Game/OpenRA.Game.csproj
@@ -294,7 +294,6 @@
     <Compile Include="Widgets\BackgroundWidget.cs" />
     <Compile Include="Widgets\LabelWidget.cs" />
     <Compile Include="Widgets\CheckboxWidget.cs" />
-    <Compile Include="Traits\HasUnitOnBuild.cs" />
     <Compile Include="Traits\Activities\Wait.cs" />
     <Compile Include="Traits\CrateAction.cs" />
     <Compile Include="Effects\CrateEffect.cs" />
diff --git a/OpenRA.Game/Traits/HasUnitOnBuild.cs b/OpenRA.Game/Traits/HasUnitOnBuild.cs
deleted file mode 100644
index 62cd4ace9e..0000000000
--- a/OpenRA.Game/Traits/HasUnitOnBuild.cs
+++ /dev/null
@@ -1,37 +0,0 @@
-
-using System;
-
-namespace OpenRA.Traits
-{
-
-	class HasUnitOnBuildInfo : ITraitInfo
-	{
-		public readonly string Unit = null;
-		public readonly string InitialActivity = null;
-		public readonly int2 SpawnOffset = int2.Zero;
-		public readonly int Facing = 0;
-		
-		public object Create( Actor self ) { return new HasUnitOnBuild(self); }
-	}
-
-	public class HasUnitOnBuild
-	{
-		
-		public HasUnitOnBuild(Actor self)
-		{
-			var info = self.Info.Traits.Get<HasUnitOnBuildInfo>();
-			
-			self.World.AddFrameEndTask(
-				w =>
-				{
-					var unit = w.CreateActor(info.Unit, self.Location 
-						+ info.SpawnOffset, self.Owner);
-					var unitTrait = unit.traits.Get<Unit>();
-					unitTrait.Facing = info.Facing;
-
-					if (info.InitialActivity != null)
-						unit.QueueActivity(Game.CreateObject<IActivity>(info.InitialActivity));
-				});
-		}
-	}
-}
diff --git a/OpenRA.Mods.RA/HasUnitOnBuild.cs b/OpenRA.Mods.RA/HasUnitOnBuild.cs
new file mode 100644
index 0000000000..02fa212578
--- /dev/null
+++ b/OpenRA.Mods.RA/HasUnitOnBuild.cs
@@ -0,0 +1,55 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007,2009,2010 Chris Forbes, Robert Pepperell, Matthew Bowra-Dean, Paul Chote, Alli Witheford.
+ * This file is part of OpenRA.
+ * 
+ *  OpenRA is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ * 
+ *  OpenRA is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ * 
+ *  You should have received a copy of the GNU General Public License
+ *  along with OpenRA.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#endregion
+
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.RA
+{
+	class HasUnitOnBuildInfo : ITraitInfo
+	{
+		public readonly string Unit = null;
+		public readonly string InitialActivity = null;
+		public readonly int2 SpawnOffset = int2.Zero;
+		public readonly int Facing = 0;
+		
+		public object Create( Actor self ) { return new HasUnitOnBuild(self); }
+	}
+
+	public class HasUnitOnBuild
+	{
+		
+		public HasUnitOnBuild(Actor self)
+		{
+			var info = self.Info.Traits.Get<HasUnitOnBuildInfo>();
+			
+			self.World.AddFrameEndTask(
+				w =>
+				{
+					var unit = w.CreateActor(info.Unit, self.Location 
+						+ info.SpawnOffset, self.Owner);
+					var unitTrait = unit.traits.Get<Unit>();
+					unitTrait.Facing = info.Facing;
+
+					if (info.InitialActivity != null)
+						unit.QueueActivity(Game.CreateObject<IActivity>(info.InitialActivity));
+				});
+		}
+	}
+}
diff --git a/OpenRA.Mods.RA/OpenRA.Mods.RA.csproj b/OpenRA.Mods.RA/OpenRA.Mods.RA.csproj
index aadd47ecee..8188bd407f 100644
--- a/OpenRA.Mods.RA/OpenRA.Mods.RA.csproj
+++ b/OpenRA.Mods.RA/OpenRA.Mods.RA.csproj
@@ -66,6 +66,7 @@
     <Compile Include="Effects\NukeLaunch.cs" />
     <Compile Include="Activities\Harvest.cs" />
     <Compile Include="Harvester.cs" />
+    <Compile Include="HasUnitOnBuild.cs" />
     <Compile Include="Husk.cs" />
     <Compile Include="LeavesHusk.cs" />
     <Compile Include="OreRefinery.cs" />