diff --git a/config/filter.d/dante.conf b/config/filter.d/dante.conf
index 986f1946..e3f6f7b2 100644
--- a/config/filter.d/dante.conf
+++ b/config/filter.d/dante.conf
@@ -9,7 +9,7 @@ before = common.conf
 [Definition]
 _daemon = danted
 
-failregex = ^%(__prefix_line)sinfo: block\(1\): tcp/accept \]: <HOST>\.\d+ [\d.]+: error after reading \d+ bytes? in \d+ seconds?: (could not access |system password authentication failed for )user "<F-USER>[^"]+</F-USER>"
+failregex = ^%(__prefix_line)sinfo: block\(1\): tcp/accept \]: <HOST>\.\d+ [\d.]+: error after reading \d+ bytes? in \d+ seconds?: (?:could not access |system password authentication failed for )user "<F-USER>[^"]+</F-USER>"
 
 [Init]
 journalmatch = _SYSTEMD_UNIT=danted.service