diff --git a/swh/core/pytest_plugin.py b/swh/core/pytest_plugin.py
--- a/swh/core/pytest_plugin.py
+++ b/swh/core/pytest_plugin.py
@@ -159,10 +159,10 @@
             cb = partial(get_response_cb,
                          ignore_urls=ignore_urls,
                          datadir=datadir)
-            requests_mock.get(re.compile('https://'), body=cb)
+            requests_mock.get(re.compile('http[s]{0,1}://'), body=cb)
         else:
             visits = {}
-            requests_mock.get(re.compile('https://'), body=partial(
+            requests_mock.get(re.compile('http[s]{0,1}://'), body=partial(
                 get_response_cb, ignore_urls=ignore_urls, visits=visits,
                 datadir=datadir)
             )
diff --git a/swh/core/tests/test_pytest_plugin.py b/swh/core/tests/test_pytest_plugin.py
--- a/swh/core/tests/test_pytest_plugin.py
+++ b/swh/core/tests/test_pytest_plugin.py
@@ -15,6 +15,10 @@
     assert response.ok
     assert response.json() == {'hello': 'you'}
 
+    response = requests.get('http://example.com/file.json')
+    assert response.ok
+    assert response.json() == {'hello': 'you'}
+
     response = requests.get('https://example.com/file.json')
     assert response.ok
     assert response.json() == {'hello': 'world'}