diff --git a/worldedit-forge/src/main/java/com/sk89q/worldedit/forge/ForgeWorld.java b/worldedit-forge/src/main/java/com/sk89q/worldedit/forge/ForgeWorld.java
index 5dbdc09f6..152b1ac7d 100644
--- a/worldedit-forge/src/main/java/com/sk89q/worldedit/forge/ForgeWorld.java
+++ b/worldedit-forge/src/main/java/com/sk89q/worldedit/forge/ForgeWorld.java
@@ -428,7 +428,7 @@ public class ForgeWorld extends AbstractWorld {
 
     @Override
     public int getMaxY() {
-        return getWorld().getHeight();
+        return getWorld().getHeight() - 1;
     }
 
     @Override