diff --git a/Lib/idlelib/idle_test/test_colorizer.py b/Lib/idlelib/idle_test/test_colorizer.py
index b0b120e75a15..308bc389384d 100644
--- a/Lib/idlelib/idle_test/test_colorizer.py
+++ b/Lib/idlelib/idle_test/test_colorizer.py
@@ -3,7 +3,7 @@
 from test.support import requires
 import unittest
 from unittest import mock
-from .tkinter_testing_utils import run_in_tk_mainloop
+from idlelib.idle_test.tkinter_testing_utils import run_in_tk_mainloop
 
 from functools import partial
 import textwrap