diff --git a/worldedit-core/src/main/java/com/boydti/fawe/util/EditSessionBuilder.java b/worldedit-core/src/main/java/com/boydti/fawe/util/EditSessionBuilder.java
index 8ec1c03a4..cb6ccff64 100644
--- a/worldedit-core/src/main/java/com/boydti/fawe/util/EditSessionBuilder.java
+++ b/worldedit-core/src/main/java/com/boydti/fawe/util/EditSessionBuilder.java
@@ -457,6 +457,7 @@ public class EditSessionBuilder {
         return wnaMode;
     }
 
+    @Nullable
     public Region[] getAllowedRegions() {
         return allowedRegions;
     }
diff --git a/worldedit-core/src/main/java/com/sk89q/worldedit/EditSession.java b/worldedit-core/src/main/java/com/sk89q/worldedit/EditSession.java
index d142a182a..aa9af053c 100644
--- a/worldedit-core/src/main/java/com/sk89q/worldedit/EditSession.java
+++ b/worldedit-core/src/main/java/com/sk89q/worldedit/EditSession.java
@@ -265,7 +265,7 @@ public class EditSession extends PassthroughExtent implements AutoCloseable {
         this.blockBag = builder.getBlockBag();
         this.history = changeSet != null;
         this.wnaMode = builder.isWNAMode();
-        this.allowedRegions = builder.getAllowedRegions().clone();
+        this.allowedRegions = builder.getAllowedRegions() != null ? builder.getAllowedRegions().clone() : null;
     }
 
     /**