diff --git a/nagios/files/nagios.cfg.Debian b/nagios/files/nagios.cfg.Debian
index f55c67a..595279b 100644
--- a/nagios/files/nagios.cfg.Debian
+++ b/nagios/files/nagios.cfg.Debian
@@ -422,7 +422,7 @@ max_host_check_spread=30
 # will not restrict the number of concurrent checks that are
 # being executed.
 
-max_concurrent_checks=0
+max_concurrent_checks=10
 
 
 
diff --git a/nagios/files/nagios.cfg.RedHat b/nagios/files/nagios.cfg.RedHat
index 9c56430..66eec22 100644
--- a/nagios/files/nagios.cfg.RedHat
+++ b/nagios/files/nagios.cfg.RedHat
@@ -423,7 +423,7 @@ max_host_check_spread=30
 # will not restrict the number of concurrent checks that are
 # being executed.
 
-max_concurrent_checks=0
+max_concurrent_checks=10