diff --git a/OpenRA.Mods.Common/OpenRA.Mods.Common.csproj b/OpenRA.Mods.Common/OpenRA.Mods.Common.csproj
index 775e10c6a6..478bc4d331 100644
--- a/OpenRA.Mods.Common/OpenRA.Mods.Common.csproj
+++ b/OpenRA.Mods.Common/OpenRA.Mods.Common.csproj
@@ -271,6 +271,7 @@
     <Compile Include="Traits\PaletteEffects\WaterPaletteRotation.cs" />
     <Compile Include="Traits\Player\ActorGroupProxy.cs" />
     <Compile Include="Traits\Player\AllyRepair.cs" />
+    <Compile Include="Traits\Player\BaseAttackNotifier.cs" />
     <Compile Include="Traits\Player\ClassicProductionQueue.cs" />
     <Compile Include="Traits\Player\ConquestVictoryConditions.cs" />
     <Compile Include="Traits\Player\GlobalUpgradeManager.cs" />
diff --git a/OpenRA.Mods.RA/Player/BaseAttackNotifier.cs b/OpenRA.Mods.Common/Traits/Player/BaseAttackNotifier.cs
similarity index 97%
rename from OpenRA.Mods.RA/Player/BaseAttackNotifier.cs
rename to OpenRA.Mods.Common/Traits/Player/BaseAttackNotifier.cs
index e00a2f10f0..0e32248c9e 100644
--- a/OpenRA.Mods.RA/Player/BaseAttackNotifier.cs
+++ b/OpenRA.Mods.Common/Traits/Player/BaseAttackNotifier.cs
@@ -9,10 +9,9 @@
 #endregion
 
 using System.Drawing;
-using OpenRA.Mods.Common.Traits;
 using OpenRA.Traits;
 
-namespace OpenRA.Mods.RA.Traits
+namespace OpenRA.Mods.Common.Traits
 {
 	[Desc("Plays an audio notification and shows a radar ping when a building is attacked.",
 		"Attach this to the player actor.")]
diff --git a/OpenRA.Mods.RA/OpenRA.Mods.RA.csproj b/OpenRA.Mods.RA/OpenRA.Mods.RA.csproj
index b02842779f..baa6abc626 100644
--- a/OpenRA.Mods.RA/OpenRA.Mods.RA.csproj
+++ b/OpenRA.Mods.RA/OpenRA.Mods.RA.csproj
@@ -173,7 +173,6 @@
     <Compile Include="Widgets\Logic\ServerCreationLogic.cs" />
     <Compile Include="Widgets\ObserverProductionIconsWidget.cs" />
     <Compile Include="Widgets\WorldCommandWidget.cs" />
-    <Compile Include="Player\BaseAttackNotifier.cs" />
     <Compile Include="Player\HarvesterAttackNotifier.cs" />
     <Compile Include="Traits\Render\RenderShroudCircle.cs" />
     <Compile Include="Traits\Infiltration\InfiltrateForCash.cs" />