@@ -1083,6 +1083,10 @@ void DynamicLibrary::RegisterCallback(const FunctionCallbackInfo<Value>& args) {
   }
 
   if (args[0]->IsFunction()) {
+    if (args.Length() > 1) {
+      THROW_ERR_INVALID_ARG_TYPE(env, "Callback must be the last argument");
+      return;
+    }
     fn = args[0].As<Function>();
   } else {
     if (!args[0]->IsObject() || args[0]->IsArray()) {
 
@@ -63,6 +63,10 @@ test('ffi callback ref and unref APIs work', () => {
       return 0;
     },
   );
+  assert.throws(() => lib.registerCallback(() => {}, { arguments: ['i32'], return: 'i32' }), {
+    code: 'ERR_INVALID_ARG_TYPE',
+    message: 'Callback must be the last argument',
+  });
 
   try {
     lib.unrefCallback(voidCallback);