diff --git a/Essentials/src/com/earth2me/essentials/Util.java b/Essentials/src/com/earth2me/essentials/Util.java
index 3e3a7efd0..238ff0c00 100644
--- a/Essentials/src/com/earth2me/essentials/Util.java
+++ b/Essentials/src/com/earth2me/essentials/Util.java
@@ -293,7 +293,7 @@ public class Util
 		while (isBlockUnsafe(world, x, y, z))
 		{
 			y += 1;
-			if (y >= 127)
+			if (y >= world.getHighestBlockYAt(x, z))
 			{
 				x += 1;
 				break;
@@ -304,8 +304,8 @@ public class Util
 			y -= 1;
 			if (y <= 1)
 			{
-				y = 127;
 				x += 1;
+				y = world.getHighestBlockYAt(x, z);
 				if (x - 32 > loc.getBlockX())
 				{
 					throw new Exception(_("holeInFloor"));
diff --git a/Essentials/src/com/earth2me/essentials/commands/Commandnuke.java b/Essentials/src/com/earth2me/essentials/commands/Commandnuke.java
index ac92110cd..19695233e 100644
--- a/Essentials/src/com/earth2me/essentials/commands/Commandnuke.java
+++ b/Essentials/src/com/earth2me/essentials/commands/Commandnuke.java
@@ -51,7 +51,7 @@ public class Commandnuke extends EssentialsCommand
 			{
 				for (int z = -10; z <= 10; z += 5)
 				{
-					final Location tntloc = new Location(world, loc.getBlockX() + x, 127, loc.getBlockZ() + z);
+					final Location tntloc = new Location(world, loc.getBlockX() + x, world.getMaxHeight(), loc.getBlockZ() + z);
 					final TNTPrimed tnt = world.spawn(tntloc, TNTPrimed.class);
 				}
 			}