diff --git a/config/filter.d/nextcloud-auth.conf b/config/filter.d/nextcloud-auth.conf
index 588fb8c9..14d1b865 100644
--- a/config/filter.d/nextcloud-auth.conf
+++ b/config/filter.d/nextcloud-auth.conf
@@ -1,6 +1,8 @@
 # Fail2Ban filter file for Nextcloud login failures
 #
 # Author: Sergey G. Brester (sebres)
+# Notice: Is also triggered by problems with the authentication provider,
+#         see https://github.com/fail2ban/fail2ban/pull/3581#issuecomment-1924903039
 #
 
 [INCLUDES]