diff --git a/repo2docker/contentproviders/doi.py b/repo2docker/contentproviders/doi.py
index 065602b7..64b93202 100644
--- a/repo2docker/contentproviders/doi.py
+++ b/repo2docker/contentproviders/doi.py
@@ -58,7 +58,7 @@ def doi2url(self, doi):
                 # Reraise any other errors because if the DOI service is down (or
                 # we hit a rate limit) we don't want to silently continue to the
                 # default Git provider as this leads to a misleading error.
-                logging.error(f"DOI {doi} does not resolve: {e}")
+                self.log.error(f"DOI {doi} does not resolve: {e}")
                 raise
             return resp.url
         else:
@@ -70,7 +70,7 @@ def fetch_file(self, file_ref, host, output_dir, unzip=False):
         # file related to a record
         file_url = deep_get(file_ref, host["download"])
         fname = deep_get(file_ref, host["filename"])
-        logging.debug(f"Downloading file {file_url} as {fname}\n")
+        self.log.debug(f"Downloading file {file_url} as {fname}\n")
 
         yield f"Requesting {file_url}\n"
         resp = self._request(file_url, stream=True)