diff --git a/src/main/java/com/sk89q/worldedit/data/McRegionReader.java b/src/main/java/com/sk89q/worldedit/data/McRegionReader.java
index 793d72a4e..743bdfebf 100644
--- a/src/main/java/com/sk89q/worldedit/data/McRegionReader.java
+++ b/src/main/java/com/sk89q/worldedit/data/McRegionReader.java
@@ -133,7 +133,7 @@ public class McRegionReader {
 
         // The chunk hasn't been generated
         if (offset == 0) {
-            return null;
+            throw new DataException("The chunk at " + x + "," + z + " is not generated");
         }
 
         int sectorNumber = offset >> 8;