diff --git a/src/node_config.cc b/src/node_config.cc
index 389bd5aa567..335ebedc583 100644
--- a/src/node_config.cc
+++ b/src/node_config.cc
@@ -21,7 +21,8 @@ using v8::Value;
 
 static void Initialize(Local<Object> target,
                        Local<Value> unused,
-                       Local<Context> context) {
+                       Local<Context> context,
+                       void* priv) {
   Environment* env = Environment::GetCurrent(context);
   Isolate* isolate = env->isolate();
 
diff --git a/test/cctest/test_linked_binding.cc b/test/cctest/test_linked_binding.cc
index 8c1b290b294..90688655527 100644
--- a/test/cctest/test_linked_binding.cc
+++ b/test/cctest/test_linked_binding.cc
@@ -3,7 +3,8 @@
 
 void InitializeBinding(v8::Local<v8::Object> exports,
                        v8::Local<v8::Value> module,
-                       v8::Local<v8::Context> context) {
+                       v8::Local<v8::Context> context,
+                       void* priv) {
   v8::Isolate* isolate = context->GetIsolate();
   exports->Set(
       context,