diff --git a/tests/test_list.py b/tests/test_list.py
index b7365c4..055331d 100644
--- a/tests/test_list.py
+++ b/tests/test_list.py
@@ -94,9 +94,13 @@ def test_list_nonexistent_table(client, mocker, valid_credentials):
     run_res.returncode = 255
     run_res.check_returncode = noop
 
-    # XXX raise a CalledProcessError here...
-
-    mocker.patch('jail2ban.pfctl.run', return_value=run_res)
+    mocker.patch('jail2ban.pfctl.run',
+                 return_value=run_res,
+                 side_effect=CalledProcessError(run_res.returncode,
+                                                'foobar',
+                                                 output=run_res.stdout,
+                                                 stderr=run_res.stderr)
+                 )
 
     response = client.get("/list/nonexistent",
                           headers={"Authorization":