diff --git a/tests/test_notify.py b/tests/test_notify.py
index 75dae1ee..bc14f374 100755
--- a/tests/test_notify.py
+++ b/tests/test_notify.py
@@ -109,6 +109,7 @@ conn.close()
         self.autocommit(self.conn)
         self.listen('foo')
         self.notify('foo').communicate()
+        time.sleep(0.1)
         self.conn.poll()
         notify = self.conn.notifies[0]
         self.assert_(isinstance(notify, psycopg2.extensions.Notify))
@@ -117,6 +118,7 @@ conn.close()
         self.autocommit(self.conn)
         self.listen('foo')
         pid = int(self.notify('foo').communicate()[0])
+        time.sleep(0.1)
         self.conn.poll()
         self.assertEqual(1, len(self.conn.notifies))
         notify = self.conn.notifies[0]
@@ -131,6 +133,7 @@ conn.close()
         self.autocommit(self.conn)
         self.listen('foo')
         pid = int(self.notify('foo', payload="Hello, world!").communicate()[0])
+        time.sleep(0.1)
         self.conn.poll()
         self.assertEqual(1, len(self.conn.notifies))
         notify = self.conn.notifies[0]