diff --git a/Lib/test/test_signal.py b/Lib/test/test_signal.py
index 1a99eef..6c23fb5 100644
--- a/Lib/test/test_signal.py
+++ b/Lib/test/test_signal.py
@@ -484,9 +484,9 @@
 
 def test_main():
     if sys.platform == "win32":
-        support.run_unittest(WindowsSignalTests)
+        test_support.run_unittest(WindowsSignalTests)
     else:
-        support.run_unittest(BasicSignalTests, InterProcessSignalTests,
+        test_support.run_unittest(BasicSignalTests, InterProcessSignalTests,
             WakeupSignalTests, SiginterruptTest, ItimerTest)