diff --git a/OpenRA.Mods.Common/Activities/Move/Move.cs b/OpenRA.Mods.Common/Activities/Move/Move.cs
index ba6e10b74e..7803576aa2 100644
--- a/OpenRA.Mods.Common/Activities/Move/Move.cs
+++ b/OpenRA.Mods.Common/Activities/Move/Move.cs
@@ -21,7 +21,7 @@ namespace OpenRA.Mods.Common.Activities
 {
 	public class Move : Activity
 	{
-		public WAngle ActorFacingModifier;
+		public WAngle ActorFacingModifier { get; private set; }
 		readonly Mobile mobile;
 		readonly WDist nearEnough;
 		readonly Func<BlockedByActor, List<CPos>> getPath;