diff --git a/config/filter.d/apache-modsecurity.conf b/config/filter.d/apache-modsecurity.conf
index 21b50fe9..f7600acf 100644
--- a/config/filter.d/apache-modsecurity.conf
+++ b/config/filter.d/apache-modsecurity.conf
@@ -10,7 +10,7 @@ before = apache-common.conf
 [Definition]
 
 
-failregex = ^%(_apache_error_client)s *ModSecurity:\s+(?:\[(?:\w+ \"[^\"]*\"|[^\]]*)\]\s*)*Access denied with code [45]\d\d
+failregex = ^%(_apache_error_client)s(?: \[client [^\]]+\])? ModSecurity:\s+(?:\[(?:\w+ \"[^\"]*\"|[^\]]*)\]\s*)*Access denied with code [45]\d\d
 
 ignoreregex =