diff --git a/OpenRA.Game/Traits/Util.cs b/OpenRA.Game/Traits/Util.cs
index 5acc1fc6d4..3223d83688 100644
--- a/OpenRA.Game/Traits/Util.cs
+++ b/OpenRA.Game/Traits/Util.cs
@@ -65,7 +65,7 @@ namespace OpenRA.Traits
 			return a / step;
 		}
 
-		public static WPos BetweenCells(CPos from, CPos to)
+		public static WPos BetweenCells(World w, CPos from, CPos to)
 		{
 			return WPos.Lerp(from.CenterPosition, to.CenterPosition, 1, 2);
 		}
diff --git a/OpenRA.Mods.RA/Move/Move.cs b/OpenRA.Mods.RA/Move/Move.cs
index da3b487f12..6c40974b0a 100755
--- a/OpenRA.Mods.RA/Move/Move.cs
+++ b/OpenRA.Mods.RA/Move/Move.cs
@@ -152,7 +152,7 @@ namespace OpenRA.Mods.RA.Move
 				var move = new MoveFirstHalf(
 					this,
 					mobile.fromCell.CenterPosition + MobileInfo.SubCellOffsets[mobile.fromSubCell],
-					Util.BetweenCells(mobile.fromCell, mobile.toCell) + (MobileInfo.SubCellOffsets[mobile.fromSubCell] + MobileInfo.SubCellOffsets[mobile.toSubCell]) / 2,
+					Util.BetweenCells(self.World, mobile.fromCell, mobile.toCell) + (MobileInfo.SubCellOffsets[mobile.fromSubCell] + MobileInfo.SubCellOffsets[mobile.toSubCell]) / 2,
 					mobile.Facing,
 					mobile.Facing,
 					0);
@@ -359,8 +359,8 @@ namespace OpenRA.Mods.RA.Move
 						var nextSubcellOffset = MobileInfo.SubCellOffsets[nextCell.Value.Second];
 						var ret = new MoveFirstHalf(
 							move,
-							Util.BetweenCells(mobile.fromCell, mobile.toCell) + (fromSubcellOffset + toSubcellOffset) / 2,
-							Util.BetweenCells(mobile.toCell, nextCell.Value.First) + (toSubcellOffset + nextSubcellOffset) / 2,
+							Util.BetweenCells(self.World, mobile.fromCell, mobile.toCell) + (fromSubcellOffset + toSubcellOffset) / 2,
+							Util.BetweenCells(self.World, mobile.toCell, nextCell.Value.First) + (toSubcellOffset + nextSubcellOffset) / 2,
 							mobile.Facing,
 							Util.GetNearestFacing(mobile.Facing, Util.GetFacing(nextCell.Value.First - mobile.toCell, mobile.Facing)),
 							moveFraction - moveFractionTotal);
@@ -374,7 +374,7 @@ namespace OpenRA.Mods.RA.Move
 
 				var ret2 = new MoveSecondHalf(
 					move,
-					Util.BetweenCells(mobile.fromCell, mobile.toCell) + (fromSubcellOffset + toSubcellOffset) / 2,
+					Util.BetweenCells(self.World, mobile.fromCell, mobile.toCell) + (fromSubcellOffset + toSubcellOffset) / 2,
 					mobile.toCell.CenterPosition + toSubcellOffset,
 					mobile.Facing,
 					mobile.Facing,