diff --git a/OpenRa.Game/Game.cs b/OpenRa.Game/Game.cs
index 777a0d8169..edc40517d0 100644
--- a/OpenRa.Game/Game.cs
+++ b/OpenRa.Game/Game.cs
@@ -59,6 +59,11 @@ namespace OpenRa.Game
 			palette = new HardwarePalette(renderer, Rules.Map);
 
 			world = new World();
+			Game.world.ActorAdded += a => 
+			{ 
+				if (a.Owner != null && a.Info != null) 
+					a.Owner.Shroud.Explore(a); 
+			};
 
 			for (int i = 0; i < 8; i++)
 			{
@@ -102,12 +107,6 @@ namespace OpenRa.Game
 
 			oreFrequency = (int)(Rules.General.GrowthRate * 60 * 1000);
 			oreTicks = oreFrequency;
-
-			foreach (var a in Game.world.Actors)
-				if (a.Info != null && a.Owner == players[0])
-					players[0].Shroud.Explore(a);
-
-			Game.world.ActorAdded += a => players[0].Shroud.Explore(a);
 		}
 
 		public static void Initialize(string mapName, Renderer renderer, int2 clientSize, 
diff --git a/OpenRa.Game/Shroud.cs b/OpenRa.Game/Shroud.cs
index 01d353245e..831af634a2 100644
--- a/OpenRa.Game/Shroud.cs
+++ b/OpenRa.Game/Shroud.cs
@@ -16,7 +16,7 @@ namespace OpenRa.Game
 
 		public void Explore(Actor a)
 		{
-			foreach (var t in Game.FindTilesInCircle(a.Location, a.Info.Sight))
+			foreach (var t in Game.FindTilesInCircle((1f/Game.CellSize * a.CenterLocation).ToInt2(), a.Info.Sight))
 				explored[t.X, t.Y] = true;
 
 			dirty = true;