diff --git a/config/filter.d/apache-noindex.conf b/config/filter.d/apache-noindex.conf
index bea26f58..0fcd2684 100644
--- a/config/filter.d/apache-noindex.conf
+++ b/config/filter.d/apache-noindex.conf
@@ -11,7 +11,7 @@ before = apache-common.conf
 
 [Definition]
 
-failregex = ^%(_apache_error_client)s ((AH01276: )?.*Cannot serve directory .* directory index forbidden by Options directive$|Directory index forbidden by Options directive: .*$)
+failregex = ^%(_apache_error_client)s (?:(?:AH01276: )?Cannot serve directory \S+: No matching DirectoryIndex \([^\)]*\) found, and server-generated directory|Directory) index forbidden by Options directive\b
 
 ignoreregex =