diff --git a/lib/internal/process/task_queues.js b/lib/internal/process/task_queues.js
index 309e27e6ecd0fa..28843d3fb16799 100644
--- a/lib/internal/process/task_queues.js
+++ b/lib/internal/process/task_queues.js
@@ -93,9 +93,6 @@ function processTicksAndRejections() {
 
 class TickObject {
   constructor(callback, args, triggerAsyncId) {
-    // This must be set to null first to avoid function tracking
-    // on the hidden class, revisit in V8 versions after 6.2
-    this.callback = null;
     this.callback = callback;
     this.args = args;
 
diff --git a/lib/timers.js b/lib/timers.js
index ddce43e7491795..98acbf8fa44152 100644
--- a/lib/timers.js
+++ b/lib/timers.js
@@ -207,9 +207,6 @@ const Immediate = class Immediate {
   constructor(callback, args) {
     this._idleNext = null;
     this._idlePrev = null;
-    // This must be set to null first to avoid function tracking
-    // on the hidden class, revisit in V8 versions after 6.2
-    this._onImmediate = null;
     this._onImmediate = callback;
     this._argv = args;
     this._destroyed = false;