diff --git a/OpenRA.Mods.Common/Traits/BodyOrientation.cs b/OpenRA.Mods.Common/Traits/BodyOrientation.cs
index 39c47652a3..86c1339a35 100644
--- a/OpenRA.Mods.Common/Traits/BodyOrientation.cs
+++ b/OpenRA.Mods.Common/Traits/BodyOrientation.cs
@@ -53,7 +53,7 @@ namespace OpenRA.Mods.Common.Traits
 		public object Create(ActorInitializer init) { return new BodyOrientation(init, this); }
 	}
 
-	public class BodyOrientation : IBodyOrientation
+	public class BodyOrientation : IBodyOrientation, ISync
 	{
 		readonly BodyOrientationInfo info;
 		readonly Lazy<int> quantizedFacings;