diff --git a/worldedit-core/src/main/java/com/sk89q/worldedit/function/visitor/BreadthFirstSearch.java b/worldedit-core/src/main/java/com/sk89q/worldedit/function/visitor/BreadthFirstSearch.java
index c1b36ef6b..7f3e5da63 100644
--- a/worldedit-core/src/main/java/com/sk89q/worldedit/function/visitor/BreadthFirstSearch.java
+++ b/worldedit-core/src/main/java/com/sk89q/worldedit/function/visitor/BreadthFirstSearch.java
@@ -229,6 +229,7 @@ public abstract class BreadthFirstSearch implements Operation {
      */
     public void visit(BlockVector3 position) {
         if (!visited.contains(position)) {
+            isVisitable(position, position); // Ignore this, just to initialize mask on this point
             queue.add(position);
             visited.add(position);
         }