diff --git a/data/Dockerfiles/postfix/syslog-ng.conf b/data/Dockerfiles/postfix/syslog-ng.conf
index bf5509c0c..9aa45e3a2 100644
--- a/data/Dockerfiles/postfix/syslog-ng.conf
+++ b/data/Dockerfiles/postfix/syslog-ng.conf
@@ -39,7 +39,7 @@ destination d_redis_cleanup {
   );
 };
 filter f_mail { facility(mail); };
-filter f_skip_local { facility (local0, local1, local2, local3, local4, local5, local6, local7); };
+filter f_skip_local { not facility (local0, local1, local2, local3, local4, local5, local6, local7); };
 log {
   source(s_src);
   filter(f_skip_local);