diff --git a/src/agenda_culturel/import_tasks/custom_extractors/fbevents.py b/src/agenda_culturel/import_tasks/custom_extractors/fbevents.py
index ca74ec6..bf02a96 100644
--- a/src/agenda_culturel/import_tasks/custom_extractors/fbevents.py
+++ b/src/agenda_culturel/import_tasks/custom_extractors/fbevents.py
@@ -34,6 +34,7 @@ class CExtractor(TwoStepsExtractor):
             filename = directory + now.strftime("%Y%m%d_%H%M%S") + ".html"
             logger.warning("cannot find any event link in events page. Save content page in " + filename)
             with open(filename, "w") as text_file:
+                text_file.write("<!-- " + self.url + " -->\n\n")
                 text_file.write(content)