diff --git a/src/main/java/com/seibel/lod/util/DataPointUtil.java b/src/main/java/com/seibel/lod/util/DataPointUtil.java
index 880026736..c813dfa5a 100644
--- a/src/main/java/com/seibel/lod/util/DataPointUtil.java
+++ b/src/main/java/com/seibel/lod/util/DataPointUtil.java
@@ -283,7 +283,7 @@ public class DataPointUtil
 	{
 		int size = dataToMerge.length / inputVerticalData;
 		short[] projection = ThreadMapUtil.getProjectionShort((WORLD_HEIGHT) / 16  + 1);
-		short[][] heightAndDepth = ThreadMapUtil.getHeightAndDepth(inputVerticalData);
+		short[][] heightAndDepth = ThreadMapUtil.getHeightAndDepth(inputVerticalData + 1);
 		long[] singleDataToMerge = ThreadMapUtil.getSingleAddDataToMerge(size);
 		int genMode = DistanceGenerationMode.SERVER.complexity;
 		boolean allEmpty = true;