diff --git a/OpenRA.Mods.Common/Traits/Air/Aircraft.cs b/OpenRA.Mods.Common/Traits/Air/Aircraft.cs
index 95ea12961a..fb5c35ee2b 100644
--- a/OpenRA.Mods.Common/Traits/Air/Aircraft.cs
+++ b/OpenRA.Mods.Common/Traits/Air/Aircraft.cs
@@ -441,7 +441,7 @@ namespace OpenRA.Mods.Common.Traits
 
 		public CPos NearestMoveableCell(CPos cell) { return cell; }
 
-		public bool IsMoving { get { return self.CenterPosition.Z > 0; } set { } }
+		public bool IsMoving { get { return self.World.Map.DistanceAboveTerrain(CenterPosition).Length > 0; } set { } }
 
 		public bool CanEnterTargetNow(Actor self, Target target)
 		{