diff --git a/common/net/minecraftforge/event/terraingen/ChunkProviderEvent.java b/common/net/minecraftforge/event/terraingen/ChunkProviderEvent.java
index 7e8d51d86..52b31baeb 100644
--- a/common/net/minecraftforge/event/terraingen/ChunkProviderEvent.java
+++ b/common/net/minecraftforge/event/terraingen/ChunkProviderEvent.java
@@ -63,7 +63,7 @@ public class ChunkProviderEvent extends Event
             this.posY = posY;
             this.posZ = posZ;
             this.sizeX = sizeX;
-            this.sizeY = sizeX;
+            this.sizeY = sizeY;
             this.sizeZ = sizeZ;
         }