diff --git a/OpenRA.Mods.Common/OpenRA.Mods.Common.csproj b/OpenRA.Mods.Common/OpenRA.Mods.Common.csproj
index 5714130f15..4abdddea0f 100644
--- a/OpenRA.Mods.Common/OpenRA.Mods.Common.csproj
+++ b/OpenRA.Mods.Common/OpenRA.Mods.Common.csproj
@@ -99,8 +99,10 @@
     <Compile Include="ServerTraits\PlayerPinger.cs" />
     <Compile Include="Traits\BlocksBullets.cs" />
     <Compile Include="Traits\Immobile.cs" />
+    <Compile Include="Traits\Demolishable.cs" />
     <Compile Include="Traits\JamsMissiles.cs" />
     <Compile Include="Traits\ProvidesRadar.cs" />
+    <Compile Include="Traits\ShakeOnDeath.cs" />
     <Compile Include="Traits\Power\AffectedByPowerOutage.cs" />
     <Compile Include="Traits\Power\CanPowerDown.cs" />
     <Compile Include="Traits\Power\Player\PowerManager.cs" />
@@ -112,6 +114,7 @@
     <Compile Include="Traits\Sound\AnnounceOnBuild.cs" />
     <Compile Include="Traits\Sound\AnnounceOnKill.cs" />
     <Compile Include="Traits\Sound\DeathSounds.cs" />
+    <Compile Include="Traits\Sound\SoundOnDamageTransition.cs" />
     <Compile Include="UtilityCommands\ConvertPngToShpCommand.cs" />
     <Compile Include="UtilityCommands\ConvertSpriteToPngCommand.cs" />
     <Compile Include="UtilityCommands\ExtractFilesCommand.cs" />
diff --git a/OpenRA.Mods.RA/Buildings/Demolishable.cs b/OpenRA.Mods.Common/Traits/Demolishable.cs
similarity index 96%
rename from OpenRA.Mods.RA/Buildings/Demolishable.cs
rename to OpenRA.Mods.Common/Traits/Demolishable.cs
index 6afef8bd28..bbb70a833d 100644
--- a/OpenRA.Mods.RA/Buildings/Demolishable.cs
+++ b/OpenRA.Mods.Common/Traits/Demolishable.cs
@@ -10,7 +10,7 @@
 
 using OpenRA.Traits;
 
-namespace OpenRA.Mods.RA
+namespace OpenRA.Mods.Common
 {
 	[Desc("Handle demolitions from C4 explosives.")]
 	public class DemolishableInfo : IDemolishableInfo, ITraitInfo
diff --git a/OpenRA.Mods.RA/Buildings/ShakeOnDeath.cs b/OpenRA.Mods.Common/Traits/ShakeOnDeath.cs
similarity index 96%
rename from OpenRA.Mods.RA/Buildings/ShakeOnDeath.cs
rename to OpenRA.Mods.Common/Traits/ShakeOnDeath.cs
index 7dd369f65d..3ac259f27a 100644
--- a/OpenRA.Mods.RA/Buildings/ShakeOnDeath.cs
+++ b/OpenRA.Mods.Common/Traits/ShakeOnDeath.cs
@@ -10,7 +10,7 @@
 
 using OpenRA.Traits;
 
-namespace OpenRA.Mods.RA.Buildings
+namespace OpenRA.Mods.Common
 {
 	public class ShakeOnDeathInfo : ITraitInfo
 	{
diff --git a/OpenRA.Mods.RA/Buildings/SoundOnDamageTransition.cs b/OpenRA.Mods.Common/Traits/Sound/SoundOnDamageTransition.cs
similarity index 96%
rename from OpenRA.Mods.RA/Buildings/SoundOnDamageTransition.cs
rename to OpenRA.Mods.Common/Traits/Sound/SoundOnDamageTransition.cs
index a822bff71c..9b1f6f7bf2 100644
--- a/OpenRA.Mods.RA/Buildings/SoundOnDamageTransition.cs
+++ b/OpenRA.Mods.Common/Traits/Sound/SoundOnDamageTransition.cs
@@ -10,7 +10,7 @@
 
 using OpenRA.Traits;
 
-namespace OpenRA.Mods.RA.Buildings
+namespace OpenRA.Mods.Common
 {
 	public class SoundOnDamageTransitionInfo : ITraitInfo
 	{
diff --git a/OpenRA.Mods.RA/OpenRA.Mods.RA.csproj b/OpenRA.Mods.RA/OpenRA.Mods.RA.csproj
index 6f39df1861..28cce932cb 100644
--- a/OpenRA.Mods.RA/OpenRA.Mods.RA.csproj
+++ b/OpenRA.Mods.RA/OpenRA.Mods.RA.csproj
@@ -170,8 +170,6 @@
     <Compile Include="Buildings\FootprintUtils.cs" />
     <Compile Include="Buildings\LineBuild.cs" />
     <Compile Include="Buildings\RepairableBuilding.cs" />
-    <Compile Include="Buildings\ShakeOnDeath.cs" />
-    <Compile Include="Buildings\SoundOnDamageTransition.cs" />
     <Compile Include="Buildings\Util.cs" />
     <Compile Include="Burns.cs" />
     <Compile Include="C4Demolition.cs" />
@@ -389,7 +387,6 @@
     <Compile Include="AttackBomber.cs" />
     <Compile Include="ShroudRenderer.cs" />
     <Compile Include="Render\WithCrateBody.cs" />
-    <Compile Include="Buildings\Demolishable.cs" />
     <Compile Include="Activities\FlyFollow.cs" />
     <Compile Include="Widgets\Logic\GameTimerLogic.cs" />
     <Compile Include="Widgets\Logic\ReplayControlBarLogic.cs" />