diff --git a/.spelling b/.spelling
index 80c479b..312f480 100644
--- a/.spelling
+++ b/.spelling
@@ -118,3 +118,4 @@ vhost
 nrpe
 nrpe.conf
 nrpe.cfg
+iptables
diff --git a/README.md b/README.md
index 024875f..dad4658 100644
--- a/README.md
+++ b/README.md
@@ -71,7 +71,7 @@ See [more details about class deployment on Confdroid.com](https://confdroid.com
 
 ## Managing Check Commands
 
-In order to connect a Nagios monitoring server to clients through NRPE, you must define commands and the desired argument strings on the clients. The default NRPE installation comes with a few examples of such commands, which are also included in this module.  However, every environment is very different in their requirements and Nagios via Puppet is all about the ability to dynamiccally set command arguments based on default variables / overrides. For that reason no hard-coded commands are included, but instead all commands are set via argument strings, where possible.
+In order to connect a Nagios monitoring server to clients through NRPE, you must define commands and the desired argument strings on the clients. The default NRPE installation comes with a few examples of such commands, which are also included in this module.  However, every environment is very different in their requirements and Nagios via Puppet is all about the ability to dynamically set command arguments based on default variables / overrides. For that reason no hard-coded commands are included, but instead all commands are set via argument strings, where possible.
 
 The commands are created within `/etc/nrpe.d/command.cfg` , every set of instructions creates a new line.