diff --git a/files/pagure.cfg.sample b/files/pagure.cfg.sample
index e61f2fb..161159d 100644
--- a/files/pagure.cfg.sample
+++ b/files/pagure.cfg.sample
@@ -121,7 +121,10 @@ IP_ALLOWED_INTERNAL = ['127.0.0.1', 'localhost', '::1']
 # The eventsource integration is what allows pagure to refresh the content
 # on your page when someone else comments on the ticket (and this without
 # asking you to reload the page.
-# By default it is off, ie: EVENTSOURCE_SOURCE is None
+# By default it is off, ie: EVENTSOURCE_SOURCE is None, to turn it on, specify
+# here what the URL of the eventsource server is, for example:
+# https://ev.pagure.io or https://pagure.io:8080 or whatever you are using
+# (Note: the urls send to it start with a '/' so no need to add one yourself)
 EVENTSOURCE_SOURCE = None
 REDIS_HOST = '0.0.0.0'
 REDIS_PORT = 6379