diff --git a/OpenRA.Mods.Common/OpenRA.Mods.Common.csproj b/OpenRA.Mods.Common/OpenRA.Mods.Common.csproj
index 7d8d549a89..590a19a100 100644
--- a/OpenRA.Mods.Common/OpenRA.Mods.Common.csproj
+++ b/OpenRA.Mods.Common/OpenRA.Mods.Common.csproj
@@ -116,6 +116,7 @@
     <Compile Include="Activities\WaitForTransport.cs" />
     <Compile Include="ActorExts.cs" />
     <Compile Include="AIUtils.cs" />
+    <Compile Include="Traits\EngineerRepairable.cs" />
     <Compile Include="Orders\OrderGenerator.cs" />
     <Compile Include="TargetExtensions.cs" />
     <Compile Include="Traits\BotModules\Squads\AttackOrFleeFuzzy.cs" />
diff --git a/OpenRA.Mods.Common/Traits/EngineerRepair.cs b/OpenRA.Mods.Common/Traits/EngineerRepair.cs
index 4c406208a7..dab7fa291a 100644
--- a/OpenRA.Mods.Common/Traits/EngineerRepair.cs
+++ b/OpenRA.Mods.Common/Traits/EngineerRepair.cs
@@ -117,9 +117,4 @@ namespace OpenRA.Mods.Common.Traits
 			}
 		}
 	}
-
-	[Desc("Eligible for instant repair.")]
-	class EngineerRepairableInfo : TraitInfo<EngineerRepairable> { }
-
-	class EngineerRepairable { }
 }
diff --git a/OpenRA.Mods.Common/Traits/EngineerRepairable.cs b/OpenRA.Mods.Common/Traits/EngineerRepairable.cs
new file mode 100644
index 0000000000..31c49a2a0a
--- /dev/null
+++ b/OpenRA.Mods.Common/Traits/EngineerRepairable.cs
@@ -0,0 +1,20 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * This file is part of OpenRA, which is free software. It is made
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version. For more
+ * information, see COPYING.
+ */
+#endregion
+
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.Common.Traits
+{
+	[Desc("Eligible for instant repair.")]
+	class EngineerRepairableInfo : TraitInfo<EngineerRepairable> { }
+
+	class EngineerRepairable { }
+}