diff --git a/config/filter.d/sogo-auth.conf b/config/filter.d/sogo-auth.conf
index 6a1abd3f..6054c589 100644
--- a/config/filter.d/sogo-auth.conf
+++ b/config/filter.d/sogo-auth.conf
@@ -17,3 +17,4 @@ failregex = Login from '<HOST>.*' for user '.*' might not have worked
 # Notes.: regex to ignore. If this regex matches, the line is ignored.
 # Values: TEXT
 #
+ignoreregex =