diff --git a/Lib/idlelib/debugger_r.py b/Lib/idlelib/debugger_r.py
index 01a3bd25998..0e6dcfbd12c 100644
--- a/Lib/idlelib/debugger_r.py
+++ b/Lib/idlelib/debugger_r.py
@@ -157,7 +157,7 @@ def code_filename(self, cid):
     #----------called by a DictProxy----------
 
     def dict_keys(self, did):
-        raise NotImplemented("dict_keys not public or pickleable")
+        raise NotImplementedError("dict_keys not public or pickleable")
 ##         dict = dicttable[did]
 ##         return dict.keys()
 
diff --git a/Lib/ssl.py b/Lib/ssl.py
index 38aa38907e1..d1d98668203 100644
--- a/Lib/ssl.py
+++ b/Lib/ssl.py
@@ -884,8 +884,8 @@ def session_reused(self):
             return self._sslobj.session_reused
 
     def dup(self):
-        raise NotImplemented("Can't dup() %s instances" %
-                             self.__class__.__name__)
+        raise NotImplementedError("Can't dup() %s instances" %
+                                  self.__class__.__name__)
 
     def _checkClosed(self, msg=None):
         # raise an exception here if you wish to check for spurious closes
diff --git a/Lib/test/test_ssl.py b/Lib/test/test_ssl.py
index d4132c5043c..f1b9565c8d9 100644
--- a/Lib/test/test_ssl.py
+++ b/Lib/test/test_ssl.py
@@ -480,8 +480,12 @@ def test_wrapped_unconnected(self):
             self.assertRaises(OSError, ss.recvfrom_into, bytearray(b'x'), 1)
             self.assertRaises(OSError, ss.send, b'x')
             self.assertRaises(OSError, ss.sendto, b'x', ('0.0.0.0', 0))
+            self.assertRaises(NotImplementedError, ss.dup)
             self.assertRaises(NotImplementedError, ss.sendmsg,
                               [b'x'], (), 0, ('0.0.0.0', 0))
+            self.assertRaises(NotImplementedError, ss.recvmsg, 100)
+            self.assertRaises(NotImplementedError, ss.recvmsg_into,
+                              [bytearray(100)])
 
     def test_timeout(self):
         # Issue #8524: when creating an SSL socket, the timeout of the
@@ -3410,10 +3414,11 @@ def _recvfrom_into():
             # Make sure sendmsg et al are disallowed to avoid
             # inadvertent disclosure of data and/or corruption
             # of the encrypted data stream
+            self.assertRaises(NotImplementedError, s.dup)
             self.assertRaises(NotImplementedError, s.sendmsg, [b"data"])
             self.assertRaises(NotImplementedError, s.recvmsg, 100)
             self.assertRaises(NotImplementedError,
-                              s.recvmsg_into, bytearray(100))
+                              s.recvmsg_into, [bytearray(100)])
             s.write(b"over\n")
 
             self.assertRaises(ValueError, s.recv, -1)