diff --git a/src/bin/bind10/tests/bind10_test.py.in b/src/bin/bind10/tests/bind10_test.py.in
index 1e62d9f1ae..cc4dafd3c5 100644
--- a/src/bin/bind10/tests/bind10_test.py.in
+++ b/src/bin/bind10/tests/bind10_test.py.in
@@ -1727,7 +1727,6 @@ class TestBossComponents(unittest.TestCase):
         def _my_sleep(nsec):
             global attempts
             attempts += 1
-            return tmp_sleep(nsec)
         time.sleep = _my_sleep
 
         thrown = False