diff --git a/ckan_pkg_checker/utils/request_utils.py b/ckan_pkg_checker/utils/request_utils.py
index 4b8deaf..df275fb 100644
--- a/ckan_pkg_checker/utils/request_utils.py
+++ b/ckan_pkg_checker/utils/request_utils.py
@@ -36,7 +36,7 @@ def _check_with_user_agent(test_url, http_method, user_agent):
                 },
             )
         req.raise_for_status()
-        log.info(f"Sent response {req.status_code}")
+        log.info("Sent response %s" % req.status_code)
         return None  # Success, no error
     except requests.exceptions.HTTPError as e:
         log.debug(