diff --git a/python2/test_typing.py b/python2/test_typing.py
index f1f4adcbc..ff15c3abf 100644
--- a/python2/test_typing.py
+++ b/python2/test_typing.py
@@ -1274,6 +1274,9 @@ def test_new_no_args(self):
         class A(Generic[T]):
             pass
 
+        with self.assertRaises(TypeError):
+            A('foo')
+
         class B(object):
             def __new__(cls):
                 # call object
diff --git a/python2/typing.py b/python2/typing.py
index 98efb244e..4d999d0a3 100644
--- a/python2/typing.py
+++ b/python2/typing.py
@@ -1288,13 +1288,15 @@ def _generic_new(base_cls, cls, *args, **kwds):
     # Assure type is erased on instantiation,
     # but attempt to store it in __orig_class__
     if cls.__origin__ is None:
-        if base_cls.__new__ is object.__new__:
+        if (base_cls.__new__ is object.__new__ and
+                cls.__init__ is not object.__init__):
             return base_cls.__new__(cls)
         else:
             return base_cls.__new__(cls, *args, **kwds)
     else:
         origin = cls._gorg
-        if base_cls.__new__ is object.__new__:
+        if (base_cls.__new__ is object.__new__ and
+                cls.__init__ is not object.__init__):
             obj = base_cls.__new__(origin)
         else:
             obj = base_cls.__new__(origin, *args, **kwds)
diff --git a/src/test_typing.py b/src/test_typing.py
index 8b154d233..ac7390667 100644
--- a/src/test_typing.py
+++ b/src/test_typing.py
@@ -1355,6 +1355,9 @@ def test_new_no_args(self):
         class A(Generic[T]):
             pass
 
+        with self.assertRaises(TypeError):
+            A('foo')
+
         class B:
             def __new__(cls):
                 # call object
diff --git a/src/typing.py b/src/typing.py
index 0595e7e34..7c0b1f644 100644
--- a/src/typing.py
+++ b/src/typing.py
@@ -1182,13 +1182,15 @@ def _generic_new(base_cls, cls, *args, **kwds):
     # Assure type is erased on instantiation,
     # but attempt to store it in __orig_class__
     if cls.__origin__ is None:
-        if base_cls.__new__ is object.__new__:
+        if (base_cls.__new__ is object.__new__ and
+                cls.__init__ is not object.__init__):
             return base_cls.__new__(cls)
         else:
             return base_cls.__new__(cls, *args, **kwds)
     else:
         origin = cls._gorg
-        if base_cls.__new__ is object.__new__:
+        if (base_cls.__new__ is object.__new__ and
+                cls.__init__ is not object.__init__):
             obj = base_cls.__new__(origin)
         else:
             obj = base_cls.__new__(origin, *args, **kwds)