diff --git a/Lib/idlelib/rpc.py b/Lib/idlelib/rpc.py
index d4af81da467..5d5bcf7e023 100644
--- a/Lib/idlelib/rpc.py
+++ b/Lib/idlelib/rpc.py
@@ -106,7 +106,7 @@ class RPCServer(socketserver.TCPServer):
             erf = sys.__stderr__
             print('\n' + '-'*40, file=erf)
             print('Unhandled server exception!', file=erf)
-            print('Thread: %s' % threading.current_thread().get_name(), file=erf)
+            print('Thread: %s' % threading.current_thread().name, file=erf)
             print('Client Address: ', client_address, file=erf)
             print('Request: ', repr(request), file=erf)
             traceback.print_exc(file=erf)
@@ -149,7 +149,7 @@ class SocketIO(object):
     def debug(self, *args):
         if not self.debugging:
             return
-        s = self.location + " " + str(threading.current_thread().get_name())
+        s = self.location + " " + str(threading.current_thread().name)
         for a in args:
             s = s + " " + str(a)
         print(s, file=sys.__stderr__)
diff --git a/Lib/idlelib/run.py b/Lib/idlelib/run.py
index 20770b68d03..28b7bc0bca2 100644
--- a/Lib/idlelib/run.py
+++ b/Lib/idlelib/run.py
@@ -230,7 +230,7 @@ class MyRPCServer(rpc.RPCServer):
             erf = sys.__stderr__
             print('\n' + '-'*40, file=erf)
             print('Unhandled server exception!', file=erf)
-            print('Thread: %s' % threading.current_thread().get_name(), file=erf)
+            print('Thread: %s' % threading.current_thread().name, file=erf)
             print('Client Address: ', client_address, file=erf)
             print('Request: ', repr(request), file=erf)
             traceback.print_exc(file=erf)
diff --git a/Misc/NEWS b/Misc/NEWS
index 8c80bc28563..7a833a31121 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -24,6 +24,9 @@ Core and Builtins
 Library
 -------
 
+- IDLE would print a "Unhandled server exception!" message when internal
+  debugging is enabled.
+
 - Issue #4455: IDLE failed to display the windows list when two windows have
   the same title.