diff --git a/core/src/main/java/com/sk89q/worldedit/function/operation/ForwardExtentCopy.java b/core/src/main/java/com/sk89q/worldedit/function/operation/ForwardExtentCopy.java
index 718b2af4..6d58e87f 100644
--- a/core/src/main/java/com/sk89q/worldedit/function/operation/ForwardExtentCopy.java
+++ b/core/src/main/java/com/sk89q/worldedit/function/operation/ForwardExtentCopy.java
@@ -254,8 +254,8 @@ public class ForwardExtentCopy implements Operation {
                 transExt.setTransform(currentTransform);
             }
 
-            affected += blockVisitor.getAffected();
         }
+        affected = blockVisitor.getAffected();
         return null;
     }