diff --git a/src/env-inl.h b/src/env-inl.h
index f9923936fe46d7..e4ea6cc2b215a9 100644
--- a/src/env-inl.h
+++ b/src/env-inl.h
@@ -90,19 +90,11 @@ Environment::AsyncHooks::fields() {
   return fields_;
 }
 
-inline int Environment::AsyncHooks::fields_count() const {
-  return kFieldsCount;
-}
-
 inline AliasedBuffer<double, v8::Float64Array>&
 Environment::AsyncHooks::async_id_fields() {
   return async_id_fields_;
 }
 
-inline int Environment::AsyncHooks::async_id_fields_count() const {
-  return kUidFieldsCount;
-}
-
 inline v8::Local<v8::String> Environment::AsyncHooks::provider_string(int idx) {
   return providers_[idx].Get(isolate_);
 }
diff --git a/src/env.h b/src/env.h
index 2ef4a25f5802bf..08fbe2aa2534ec 100644
--- a/src/env.h
+++ b/src/env.h
@@ -388,10 +388,7 @@ class Environment {
     AsyncHooks() = delete;
 
     inline AliasedBuffer<uint32_t, v8::Uint32Array>& fields();
-    inline int fields_count() const;
-
     inline AliasedBuffer<double, v8::Float64Array>& async_id_fields();
-    inline int async_id_fields_count() const;
 
     inline v8::Local<v8::String> provider_string(int idx);