diff --git a/OpenRA.Mods.Common/OpenRA.Mods.Common.csproj b/OpenRA.Mods.Common/OpenRA.Mods.Common.csproj
index 167eb26aa1..9371ee7322 100644
--- a/OpenRA.Mods.Common/OpenRA.Mods.Common.csproj
+++ b/OpenRA.Mods.Common/OpenRA.Mods.Common.csproj
@@ -134,7 +134,6 @@
     <Compile Include="AudioLoaders\VocLoader.cs" />
     <Compile Include="AudioLoaders\WavLoader.cs" />
     <Compile Include="Effects\Beacon.cs" />
-    <Compile Include="Effects\Contrail.cs" />
     <Compile Include="Effects\ContrailFader.cs" />
     <Compile Include="Effects\CrateEffect.cs" />
     <Compile Include="Effects\RevealShroudEffect.cs" />
@@ -295,6 +294,7 @@
     <Compile Include="Traits\Burns.cs" />
     <Compile Include="Traits\ChangesTerrain.cs" />
     <Compile Include="Traits\CommandBarBlacklist.cs" />
+    <Compile Include="Traits\Contrail.cs" />
     <Compile Include="Traits\Health.cs" />
     <Compile Include="Traits\HitShape.cs" />
     <Compile Include="Traits\Player\DeveloperMode.cs" />
diff --git a/OpenRA.Mods.Common/Effects/Contrail.cs b/OpenRA.Mods.Common/Traits/Contrail.cs
similarity index 91%
rename from OpenRA.Mods.Common/Effects/Contrail.cs
rename to OpenRA.Mods.Common/Traits/Contrail.cs
index a9750cba18..1dd82dd956 100644
--- a/OpenRA.Mods.Common/Effects/Contrail.cs
+++ b/OpenRA.Mods.Common/Traits/Contrail.cs
@@ -13,10 +13,9 @@ using System.Collections.Generic;
 using System.Drawing;
 using OpenRA.Graphics;
 using OpenRA.Mods.Common.Graphics;
-using OpenRA.Mods.Common.Traits;
 using OpenRA.Traits;
 
-namespace OpenRA.Mods.Common.Effects
+namespace OpenRA.Mods.Common.Traits
 {
 	[Desc("Draw a colored contrail behind this actor when they move.")]
 	class ContrailInfo : ITraitInfo, Requires<BodyOrientationInfo>
@@ -61,18 +60,18 @@ namespace OpenRA.Mods.Common.Effects
 			body = self.Trait<BodyOrientation>();
 		}
 
-		public void Tick(Actor self)
+		void ITick.Tick(Actor self)
 		{
 			var local = info.Offset.Rotate(body.QuantizeOrientation(self, self.Orientation));
 			trail.Update(self.CenterPosition + body.LocalToWorld(local));
 		}
 
-		public IEnumerable<IRenderable> Render(Actor self, WorldRenderer wr)
+		IEnumerable<IRenderable> IRender.Render(Actor self, WorldRenderer wr)
 		{
 			return new IRenderable[] { trail };
 		}
 
-		public void AddedToWorld(Actor self)
+		void INotifyAddedToWorld.AddedToWorld(Actor self)
 		{
 			trail = new ContrailRenderable(self.World, color, info.TrailWidth, info.TrailLength, 0, info.ZOffset);
 		}