If you have conf/dirA/foo.conf and conf/dirB (without a conf file in it) the configuration Include conf/*/foo.conf gives an error, despite the wildcard expression matching at least one file. This is a bug. httpd-dev thread starts at http://mail-archives.apache.org/mod_mbox/httpd-dev/201201.mbox/%3C201201221914.29589.sf%40sfritsch.de%3E