diff --git a/src/node.cc b/src/node.cc
index 1cf8e354614307..b6af9e53b67267 100644
--- a/src/node.cc
+++ b/src/node.cc
@@ -3327,7 +3327,7 @@ void LoadEnvironment(Environment* env) {
   global->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "global"), global);
 
   Local<Value> arg = env->process_object();
-  f->Call(Null(env->isolate()), ARRAY_SIZE(&arg), &arg);
+  f->Call(Null(env->isolate()), 1, &arg);
 }
 
 static void PrintHelp();