diff --git a/OpenRA.Game/OpenRA.Game.csproj b/OpenRA.Game/OpenRA.Game.csproj
index 1ae2893963..974301a94b 100755
--- a/OpenRA.Game/OpenRA.Game.csproj
+++ b/OpenRA.Game/OpenRA.Game.csproj
@@ -185,12 +185,10 @@
     <Compile Include="Traits\Activities\Move.cs" />
     <Compile Include="Traits\Activities\Turn.cs" />
     <Compile Include="Traits\AttackBase.cs" />
-    <Compile Include="Traits\Modifiers\BelowUnits.cs" />
     <Compile Include="Traits\Buildable.cs" />
     <Compile Include="Traits\Building.cs" />
     <Compile Include="Traits\World\BuildingInfluence.cs" />
     <Compile Include="Traits\CanPowerDown.cs" />
-    <Compile Include="Traits\Modifiers\InvisibleToOthers.cs" />
     <Compile Include="Traits\ConstructionYard.cs" />
     <Compile Include="Traits\LimitedAmmo.cs" />
     <Compile Include="Traits\Player\PlaceBuilding.cs" />
@@ -207,14 +205,12 @@
     <Compile Include="Traits\RallyPoint.cs" />
     <Compile Include="Traits\Render\RenderSimple.cs" />
     <Compile Include="Traits\Render\RenderUnit.cs" />
-    <Compile Include="Traits\Modifiers\WithMuzzleFlash.cs" />
     <Compile Include="Traits\StoresOre.cs" />
     <Compile Include="Traits\Cloak.cs" />
     <Compile Include="Traits\TraitsInterfaces.cs" />
     <Compile Include="Traits\Turreted.cs" />
     <Compile Include="Traits\Unit.cs" />
     <Compile Include="Traits\World\UnitInfluence.cs" />
-    <Compile Include="Traits\Modifiers\WithShadow.cs" />
     <Compile Include="Network\UnitOrders.cs" />
     <Compile Include="Traits\Util.cs" />
     <Compile Include="UiOverlay.cs" />
diff --git a/OpenRA.Game/Traits/Modifiers/BelowUnits.cs b/OpenRA.Mods.RA/BelowUnits.cs
similarity index 93%
rename from OpenRA.Game/Traits/Modifiers/BelowUnits.cs
rename to OpenRA.Mods.RA/BelowUnits.cs
index 4dfd3b05ef..e7e836f336 100644
--- a/OpenRA.Game/Traits/Modifiers/BelowUnits.cs
+++ b/OpenRA.Mods.RA/BelowUnits.cs
@@ -20,8 +20,9 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using OpenRA.Traits;
 
-namespace OpenRA.Traits
+namespace OpenRA.Mods.RA
 {
 	class BelowUnitsInfo : TraitInfo<BelowUnits> { }
 
diff --git a/OpenRA.Game/Traits/Modifiers/InvisibleToOthers.cs b/OpenRA.Mods.RA/InvisibleToOthers.cs
similarity index 93%
rename from OpenRA.Game/Traits/Modifiers/InvisibleToOthers.cs
rename to OpenRA.Mods.RA/InvisibleToOthers.cs
index f4d18711f2..f75a1501c4 100644
--- a/OpenRA.Game/Traits/Modifiers/InvisibleToOthers.cs
+++ b/OpenRA.Mods.RA/InvisibleToOthers.cs
@@ -19,8 +19,9 @@
 #endregion
 
 using System.Collections.Generic;
+using OpenRA.Traits;
 
-namespace OpenRA.Traits
+namespace OpenRA.Mods.RA
 {
 	class InvisibleToOthersInfo : TraitInfo<InvisibleToOthers> { }
 
diff --git a/OpenRA.Mods.RA/OpenRA.Mods.RA.csproj b/OpenRA.Mods.RA/OpenRA.Mods.RA.csproj
index 664b488efd..3c4790c768 100644
--- a/OpenRA.Mods.RA/OpenRA.Mods.RA.csproj
+++ b/OpenRA.Mods.RA/OpenRA.Mods.RA.csproj
@@ -80,6 +80,7 @@
     <Compile Include="AttackTurreted.cs" />
     <Compile Include="AutoHeal.cs" />
     <Compile Include="AutoTarget.cs" />
+    <Compile Include="BelowUnits.cs" />
     <Compile Include="Bridge.cs" />
     <Compile Include="BridgeLayer.cs" />
     <Compile Include="Burns.cs" />
@@ -104,6 +105,7 @@
     <Compile Include="HasUnitOnBuild.cs" />
     <Compile Include="Helicopter.cs" />
     <Compile Include="Husk.cs" />
+    <Compile Include="InvisibleToOthers.cs" />
     <Compile Include="LeavesHusk.cs" />
     <Compile Include="LightPaletteRotator.cs" />
     <Compile Include="OreRefinery.cs" />
@@ -167,6 +169,8 @@
     <Compile Include="TraitsInterfaces.cs" />
     <Compile Include="DefaultShellmapScript.cs" />
     <Compile Include="WaterPaletteRotation.cs" />
+    <Compile Include="WithMuzzleFlash.cs" />
+    <Compile Include="WithShadow.cs" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\OpenRA.FileFormats\OpenRA.FileFormats.csproj">
diff --git a/OpenRA.Game/Traits/Modifiers/WithMuzzleFlash.cs b/OpenRA.Mods.RA/WithMuzzleFlash.cs
similarity index 94%
rename from OpenRA.Game/Traits/Modifiers/WithMuzzleFlash.cs
rename to OpenRA.Mods.RA/WithMuzzleFlash.cs
index de9d5073a4..df81e9ed08 100644
--- a/OpenRA.Game/Traits/Modifiers/WithMuzzleFlash.cs
+++ b/OpenRA.Mods.RA/WithMuzzleFlash.cs
@@ -19,8 +19,9 @@
 #endregion
 
 using OpenRA.Graphics;
+using OpenRA.Traits;
 
-namespace OpenRA.Traits
+namespace OpenRA.Mods.RA
 {
 	class WithMuzzleFlashInfo : ITraitInfo, ITraitPrerequisite<RenderSimpleInfo>
 	{
diff --git a/OpenRA.Game/Traits/Modifiers/WithShadow.cs b/OpenRA.Mods.RA/WithShadow.cs
similarity index 93%
rename from OpenRA.Game/Traits/Modifiers/WithShadow.cs
rename to OpenRA.Mods.RA/WithShadow.cs
index 1f6de89b74..c6618c5ed9 100644
--- a/OpenRA.Game/Traits/Modifiers/WithShadow.cs
+++ b/OpenRA.Mods.RA/WithShadow.cs
@@ -20,8 +20,9 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using OpenRA.Traits;
 
-namespace OpenRA.Traits
+namespace OpenRA.Mods.RA
 {
 	class WithShadowInfo : TraitInfo<WithShadow> {}