diff --git a/rq/job.py b/rq/job.py
index 7195ddb..ffa7983 100644
--- a/rq/job.py
+++ b/rq/job.py
@@ -486,7 +486,7 @@ class Job(object):
     def perform(self):  # noqa
         """Invokes the job function with the job arguments."""
         self.connection.persist(self.key)
-        self.ttl = self.connection.ttl(self.key)
+        self.ttl = -1
         _job_stack.push(self.id)
         try:
             self._result = self.func(*self.args, **self.kwargs)
diff --git a/tests/test_job.py b/tests/test_job.py
index 2e91751..600cefd 100644
--- a/tests/test_job.py
+++ b/tests/test_job.py
@@ -4,11 +4,6 @@ from __future__ import (absolute_import, division, print_function,
 
 from datetime import datetime
 
-from tests import RQTestCase
-from tests.fixtures import (access_self, CallableObject, Number, say_hello,
-                            some_calculation)
-from tests.helpers import strip_microseconds
-
 from rq.compat import as_text, PY2
 from rq.exceptions import NoSuchJobError, UnpickleError
 from rq.job import get_current_job, Job