diff --git a/src/async_wrap.cc b/src/async_wrap.cc
index a8a4601e76ec43..404dfb2c96943d 100644
--- a/src/async_wrap.cc
+++ b/src/async_wrap.cc
@@ -555,9 +555,6 @@ AsyncWrap::AsyncWrap(Environment* env,
   CHECK_NE(provider, PROVIDER_NONE);
   CHECK_GE(object->InternalFieldCount(), 1);
 
-  // Shift provider value over to prevent id collision.
-  persistent().SetWrapperClassId(NODE_ASYNC_ID_OFFSET + provider_type_);
-
   // Use AsyncReset() call to execute the init() callbacks.
   AsyncReset(execution_async_id, silent);
 }
diff --git a/src/async_wrap.h b/src/async_wrap.h
index 25cd4e351c3bd9..63a3000ed1290e 100644
--- a/src/async_wrap.h
+++ b/src/async_wrap.h
@@ -31,8 +31,6 @@
 
 namespace node {
 
-#define NODE_ASYNC_ID_OFFSET 0xA1C
-
 #define NODE_ASYNC_NON_CRYPTO_PROVIDER_TYPES(V)                               \
   V(NONE)                                                                     \
   V(DNSCHANNEL)                                                               \
diff --git a/src/node_buffer.cc b/src/node_buffer.cc
index dd285156b5644b..8642477db4d927 100644
--- a/src/node_buffer.cc
+++ b/src/node_buffer.cc
@@ -33,8 +33,6 @@
 #include <string.h>
 #include <limits.h>
 
-#define BUFFER_ID 0xB0E4
-
 #define MIN(a, b) ((a) < (b) ? (a) : (b))
 
 #define THROW_AND_RETURN_UNLESS_BUFFER(env, obj)                            \
@@ -144,7 +142,6 @@ CallbackInfo::CallbackInfo(Isolate* isolate,
     CHECK_NOT_NULL(data_);
 
   persistent_.SetWeak(this, WeakCallback, v8::WeakCallbackType::kParameter);
-  persistent_.SetWrapperClassId(BUFFER_ID);
   isolate->AdjustAmountOfExternalAllocatedMemory(sizeof(*this));
 }