diff --git a/Lib/idlelib/idle_test/test_text.py b/Lib/idlelib/idle_test/test_text.py
index 0f31179e04b28f..43a9ba02c3d3c9 100644
--- a/Lib/idlelib/idle_test/test_text.py
+++ b/Lib/idlelib/idle_test/test_text.py
@@ -6,7 +6,7 @@
 from test.support import requires
 from _tkinter import TclError
 
-class TextTest(object):
+class TextTest:
     "Define items common to both sets of tests."
 
     hw = 'hello\nworld'  # Several tests insert this after initialization.
diff --git a/Lib/idlelib/idle_test/test_zzdummy.py b/Lib/idlelib/idle_test/test_zzdummy.py
index 1013cdc3c46f4f..209d8564da0664 100644
--- a/Lib/idlelib/idle_test/test_zzdummy.py
+++ b/Lib/idlelib/idle_test/test_zzdummy.py
@@ -19,7 +19,7 @@
 }
 code_sample = """\
 
-class C1():
+class C1:
     # Class comment.
     def __init__(self, a, b):
         self.a = a