diff --git a/source/niknaks/containers.d b/source/niknaks/containers.d
index 518c943..7d7eee8 100644
--- a/source/niknaks/containers.d
+++ b/source/niknaks/containers.d
@@ -675,7 +675,7 @@ public class Tree(T)
                 touch(child);
 
                 // Visit
-                collected ~= child.dfs(strat);
+                collected ~= child.dfs(strat, touch);
             }
         }