diff --git a/Lib/test/test_asyncio/test_selector_events.py b/Lib/test/test_asyncio/test_selector_events.py
index a3d118e1881..3477573ec3e 100644
--- a/Lib/test/test_asyncio/test_selector_events.py
+++ b/Lib/test/test_asyncio/test_selector_events.py
@@ -188,6 +188,7 @@ class BaseSelectorEventLoopTests(test_utils.TestCase):
         sock = mock.Mock()
         sock.fileno.return_value = 10
         sock.recv.side_effect = BlockingIOError
+        sock.gettimeout.return_value = 0.0
 
         self.loop.add_reader = mock.Mock()
         self.loop.remove_reader = mock.Mock()
@@ -268,6 +269,7 @@ class BaseSelectorEventLoopTests(test_utils.TestCase):
         sock = mock.Mock()
         sock.fileno.return_value = 10
         sock.send.side_effect = BlockingIOError
+        sock.gettimeout.return_value = 0.0
 
         self.loop.add_writer = mock.Mock()
         self.loop.remove_writer = mock.Mock()