diff --git a/src/main/java/StevenDimDoors/mod_pocketDim/items/ItemRiftSignature.java b/src/main/java/StevenDimDoors/mod_pocketDim/items/ItemRiftSignature.java
index 6f5c5b8..a20bc46 100644
--- a/src/main/java/StevenDimDoors/mod_pocketDim/items/ItemRiftSignature.java
+++ b/src/main/java/StevenDimDoors/mod_pocketDim/items/ItemRiftSignature.java
@@ -142,6 +142,10 @@ public class ItemRiftSignature extends Item
 	{
 		y=y-2;//get the block the player actually clicked on
 		Block block = Block.blocksList[world.getBlockId(x, y, z)];
+		if(block==null)
+		{
+			return y+2;
+		}
 		if(block.isBlockReplaceable(world, x, y, z))
 		{
 			return y+1;//move block placement down (-2+1) one so its directly over things like snow