diff --git a/js/src/irregexp/imported/regexp-stack.cc b/js/src/irregexp/imported/regexp-stack.cc
index 1978ca1894..dac5e920ec 100644
--- a/imported/regexp-stack.cc
+++ b/imported/regexp-stack.cc
@@ -23,6 +23,8 @@

 RegExpStack::~RegExpStack() { thread_local_.FreeAndInvalidate(); }

+#ifndef COMPILING_IRREGEXP_FOR_EXTERNAL_EMBEDDER
+
 // static
 RegExpStack* RegExpStack::New() {
 #ifdef V8_ENABLE_SANDBOX_HARDWARE_SUPPORT
@@ -56,6 +58,8 @@
 #endif
 }

+#endif  // !COMPILING_IRREGEXP_FOR_EXTERNAL_EMBEDDER
+
 char* RegExpStack::ArchiveStack(char* to) {
   if (!thread_local_.owns_memory_) {
     // Force dynamic stacks prior to archiving. Any growth will do. A dynamic
diff --git a/js/src/irregexp/imported/regexp-stack.h b/js/src/irregexp/imported/regexp-stack.h
index ed16c7ff2b..90b303b1b7 100644
--- a/imported/regexp-stack.h
+++ b/imported/regexp-stack.h
@@ -92,12 +92,10 @@
   // Maximal size of allocated stack area.
   static constexpr size_t kMaximumStackSize = 64 * MB;

- private:
-  // Currently private as we need to use New/Delete instead.
-  // TODO(426514762): revert this change once its no longer needed.
   RegExpStack();
   ~RegExpStack();

+ private:
   // Artificial limit used when the thread-local state has been destroyed.
   static const Address kMemoryTop =
       static_cast<Address>(static_cast<uintptr_t>(-1));