diff --git a/OpenRA.Mods.RA/Missions/Allies04Script.cs b/OpenRA.Mods.RA/Missions/Allies04Script.cs
index 852355a8e2..cc9623c6e5 100644
--- a/OpenRA.Mods.RA/Missions/Allies04Script.cs
+++ b/OpenRA.Mods.RA/Missions/Allies04Script.cs
@@ -500,7 +500,7 @@ namespace OpenRA.Mods.RA.Missions
 
 	class Allies04TryRepairBuildingInfo : ITraitInfo
 	{
-		public readonly string Player;
+		public readonly string Player = null;
 
 		public object Create(ActorInitializer init) { return new Allies04TryRepairBuilding(this); }
 	}