diff --git a/OpenRA.Game/OpenRA.Game.csproj b/OpenRA.Game/OpenRA.Game.csproj
index 331deef759..a809d1c9bb 100644
--- a/OpenRA.Game/OpenRA.Game.csproj
+++ b/OpenRA.Game/OpenRA.Game.csproj
@@ -181,7 +181,6 @@
     <Compile Include="Sync.cs" />
     <Compile Include="TraitDictionary.cs" />
     <Compile Include="Traits\LintAttributes.cs" />
-    <Compile Include="Traits\Player\DeveloperMode.cs" />
     <Compile Include="Traits\Player\PlayerResources.cs" />
     <Compile Include="Traits\Selectable.cs" />
     <Compile Include="Traits\Target.cs" />
diff --git a/OpenRA.Mods.Common/OpenRA.Mods.Common.csproj b/OpenRA.Mods.Common/OpenRA.Mods.Common.csproj
index fce0fc4706..102e27aac3 100644
--- a/OpenRA.Mods.Common/OpenRA.Mods.Common.csproj
+++ b/OpenRA.Mods.Common/OpenRA.Mods.Common.csproj
@@ -297,6 +297,7 @@
     <Compile Include="Traits\CommandBarBlacklist.cs" />
     <Compile Include="Traits\Health.cs" />
     <Compile Include="Traits\HitShape.cs" />
+    <Compile Include="Traits\Player\DeveloperMode.cs" />
     <Compile Include="Traits\PowerTooltip.cs" />
     <Compile Include="Traits\Render\VeteranProductionIconOverlay.cs" />
     <Compile Include="Traits\Capturable.cs" />
diff --git a/OpenRA.Game/Traits/Player/DeveloperMode.cs b/OpenRA.Mods.Common/Traits/Player/DeveloperMode.cs
similarity index 98%
rename from OpenRA.Game/Traits/Player/DeveloperMode.cs
rename to OpenRA.Mods.Common/Traits/Player/DeveloperMode.cs
index 54cfef4ccb..bf444a31b0 100644
--- a/OpenRA.Game/Traits/Player/DeveloperMode.cs
+++ b/OpenRA.Mods.Common/Traits/Player/DeveloperMode.cs
@@ -11,8 +11,9 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using OpenRA.Traits;
 
-namespace OpenRA.Traits
+namespace OpenRA.Mods.Common.Traits
 {
 	[Desc("Attach this to the player actor.")]
 	public class DeveloperModeInfo : ITraitInfo, ILobbyOptions
diff --git a/OpenRA.Mods.Common/Widgets/Logic/Ingame/IngameRadarDisplayLogic.cs b/OpenRA.Mods.Common/Widgets/Logic/Ingame/IngameRadarDisplayLogic.cs
index fde9e38201..f76af6b817 100644
--- a/OpenRA.Mods.Common/Widgets/Logic/Ingame/IngameRadarDisplayLogic.cs
+++ b/OpenRA.Mods.Common/Widgets/Logic/Ingame/IngameRadarDisplayLogic.cs
@@ -11,8 +11,8 @@
 
 using System.Drawing;
 using System.Linq;
+using OpenRA.Mods.Common.Traits;
 using OpenRA.Mods.Common.Traits.Radar;
-using OpenRA.Traits;
 using OpenRA.Widgets;
 
 namespace OpenRA.Mods.Common.Widgets.Logic