diff -Nru nagios.orig/sample-config/nagios.cfg.in nagios/sample-config/nagios.cfg.in
--- nagios.orig/sample-config/nagios.cfg.in	2013-08-30 19:46:14.000000000 +0200
+++ nagios/sample-config/nagios.cfg.in	2014-05-07 15:02:57.781679579 +0200
@@ -53,6 +53,7 @@
 #cfg_dir=@sysconfdir@/printers
 #cfg_dir=@sysconfdir@/switches
 #cfg_dir=@sysconfdir@/routers
+cfg_dir=@sysconfdir@/conf.d