diff --git a/src/jsTypeFactory.cc b/src/jsTypeFactory.cc
index da21ad25..c88815e8 100644
--- a/src/jsTypeFactory.cc
+++ b/src/jsTypeFactory.cc
@@ -158,8 +158,8 @@ bool callPyFunc(JSContext *cx, unsigned int argc, JS::Value *vp) {
   JS::Value pyFuncVal = js::GetFunctionNativeReserved(&(callargs.callee()), 0);
   PyObject *pyFunc = (PyObject *)(pyFuncVal.toPrivate());
 
-  JS::RootedObject thisv(cx);
-  JS_ValueToObject(cx, callargs.thisv(), &thisv);
+  JS::RootedObject *thisv = new JS::RootedObject(cx);
+  JS_ValueToObject(cx, callargs.thisv(), thisv);
 
   if (!callargs.length()) {
     PyObject *pyRval = PyObject_CallNoArgs(pyFunc);
@@ -171,8 +171,8 @@ bool callPyFunc(JSContext *cx, unsigned int argc, JS::Value *vp) {
   // populate python args tuple
   PyObject *pyArgs = PyTuple_New(callargs.length());
   for (size_t i = 0; i < callargs.length(); i++) {
-    JS::RootedValue jsArg = JS::RootedValue(cx, callargs[i]);
-    PyType *pyArg = (pyTypeFactory(cx, &thisv, &jsArg));
+    JS::RootedValue *jsArg = new JS::RootedValue(cx, callargs[i]);
+    PyType *pyArg = pyTypeFactory(cx, thisv, jsArg);
     PyTuple_SetItem(pyArgs, i, pyArg->getPyObject());
   }
 
diff --git a/tests/python/test_pythonmonkey_eval.py b/tests/python/test_pythonmonkey_eval.py
index fa06e497..ff63b3af 100644
--- a/tests/python/test_pythonmonkey_eval.py
+++ b/tests/python/test_pythonmonkey_eval.py
@@ -590,6 +590,14 @@ def test_eval_functions_ucs4_string_args():
         
         assert pm.asUCS4(concatenate(string1, string2)) == (string1 + string2)
 
+def test_eval_functions_roundtrip():
+    # BF-60 https://github.com/Distributive-Network/PythonMonkey/pull/18
+    def ident(x):
+        return x
+    js_fn_back = pm.eval("(py_fn) => py_fn(()=>{ return 'YYZ' })")(ident)
+    # pm.collect() # TODO: to be fixed in BF-59
+    assert "YYZ" == js_fn_back()
+
 def test_eval_functions_pyfunctions_ints():
     caller = pm.eval("(func, param1, param2) => { return func(param1, param2) }")
     def add(a, b):