diff --git a/OpenRA.Game/OpenRA.Game.csproj b/OpenRA.Game/OpenRA.Game.csproj
index cc3b1b4405..01bd0ad968 100644
--- a/OpenRA.Game/OpenRA.Game.csproj
+++ b/OpenRA.Game/OpenRA.Game.csproj
@@ -261,7 +261,6 @@
     <Compile Include="ExternalMods.cs" />
   </ItemGroup>
   <ItemGroup>
-    <Compile Include="FileSystem\D2kSoundResources.cs" />
     <Compile Include="FileSystem\Folder.cs" />
     <Compile Include="FileSystem\InstallShieldPackage.cs" />
     <Compile Include="FileSystem\MixFile.cs" />
diff --git a/OpenRA.Mods.D2k/OpenRA.Mods.D2k.csproj b/OpenRA.Mods.D2k/OpenRA.Mods.D2k.csproj
index f009a0f900..6028f6ca67 100644
--- a/OpenRA.Mods.D2k/OpenRA.Mods.D2k.csproj
+++ b/OpenRA.Mods.D2k/OpenRA.Mods.D2k.csproj
@@ -87,6 +87,7 @@
     <Compile Include="UtilityCommands\ImportD2kMapCommand.cs" />
     <Compile Include="Traits\World\D2kEditorResourceLayer.cs" />
     <Compile Include="Lint\CheckImportActors.cs" />
+    <Compile Include="PackageLoaders\D2kSoundResources.cs" />
   </ItemGroup>
   <PropertyGroup>
     <PostBuildEvent>mkdir "$(SolutionDir)mods/d2k/"
diff --git a/OpenRA.Game/FileSystem/D2kSoundResources.cs b/OpenRA.Mods.D2k/PackageLoaders/D2kSoundResources.cs
similarity index 93%
rename from OpenRA.Game/FileSystem/D2kSoundResources.cs
rename to OpenRA.Mods.D2k/PackageLoaders/D2kSoundResources.cs
index 5dea955653..76fe7a85b0 100644
--- a/OpenRA.Game/FileSystem/D2kSoundResources.cs
+++ b/OpenRA.Mods.D2k/PackageLoaders/D2kSoundResources.cs
@@ -12,8 +12,9 @@
 using System;
 using System.Collections.Generic;
 using System.IO;
+using OpenRA.FileSystem;
 
-namespace OpenRA.FileSystem
+namespace OpenRA.Mods.D2k.PackageLoaders
 {
 	public class D2kSoundResourcesLoader : IPackageLoader
 	{
@@ -70,7 +71,7 @@ namespace OpenRA.FileSystem
 				return new MemoryStream(s.ReadBytes((int)e.Length));
 			}
 
-			public IReadOnlyPackage OpenPackage(string filename, FileSystem context)
+			public IReadOnlyPackage OpenPackage(string filename, FileSystem.FileSystem context)
 			{
 				// Not implemented
 				return null;
@@ -87,7 +88,7 @@ namespace OpenRA.FileSystem
 			}
 		}
 
-		bool IPackageLoader.TryParsePackage(Stream s, string filename, FileSystem context, out IReadOnlyPackage package)
+		bool IPackageLoader.TryParsePackage(Stream s, string filename, FileSystem.FileSystem context, out IReadOnlyPackage package)
 		{
 			if (!filename.EndsWith(".rs", StringComparison.InvariantCultureIgnoreCase))
 			{