diff --git a/OpenRA.Game/ShroudRenderer.cs b/OpenRA.Game/ShroudRenderer.cs
index 500040c38e..aa4f762481 100644
--- a/OpenRA.Game/ShroudRenderer.cs
+++ b/OpenRA.Game/ShroudRenderer.cs
@@ -55,6 +55,8 @@ namespace OpenRA
 		{
 			if (disabled)
 				return true;
+			if (!map.IsInMap(x, y))
+				return false;
 			return shroud.visibleCells[x,y] != 0;
 		}