diff --git a/certbot-apache/tests/ocsp_prefetch_test.py b/certbot-apache/tests/ocsp_prefetch_test.py
index 6a61435b8..10461a261 100644
--- a/certbot-apache/tests/ocsp_prefetch_test.py
+++ b/certbot-apache/tests/ocsp_prefetch_test.py
@@ -217,7 +217,7 @@ class OCSPPrefetchTest(util.ApacheTest):
 
     @mock.patch("certbot_apache._internal.constants.OCSP_INTERNAL_TTL", 0)
     def test_ocsp_prefetch_refresh(self):
-        def ocsp_req_mock(_cert, _chain, workfile):
+        def ocsp_req_mock(_cert, _chain, _timeout, workfile):
             """Method to mock the OCSP request and write response to file"""
             with open(workfile, 'w') as fh:
                 fh.write("MOCKRESPONSE")