diff --git a/doc/file.README.html b/doc/file.README.html
index ee0d259..70a08c7 100644
--- a/doc/file.README.html
+++ b/doc/file.README.html
@@ -129,7 +129,7 @@
 </li></ul>
 
 <blockquote>
-<p>Note: The value for the <code>nagios_server</code> variable is derived from a global parameter set in Foreman (<code>nagios_server</code>), because the paremeter is used across multiple modules. You need to set that manually in Foreman under “Global Parameters”. Same for <code>nagios_source</code>, the value for the firewall source.</p>
+<p>Note: The value for the <code>nagios_server</code> variable is derived from a global parameter set in Foreman (<code>nagios_server</code>), because the paremeter is used across multiple modules. You need to set that manually in Foreman under “Global Parameters”. Same for <code>nagios_source</code>, the value for the firewall source, which should point to the source IP or source range for the nagios server querying NRPE.</p>
 </blockquote>
 
 <h2 id="label-Repo+Documentation">Repo Documentation</h2>
diff --git a/doc/index.html b/doc/index.html
index 39989e6..28f6d9f 100644
--- a/doc/index.html
+++ b/doc/index.html
@@ -129,7 +129,7 @@
 </li></ul>
 
 <blockquote>
-<p>Note: The value for the <code>nagios_server</code> variable is derived from a global parameter set in Foreman (<code>nagios_server</code>), because the paremeter is used across multiple modules. You need to set that manually in Foreman under “Global Parameters”. Same for <code>nagios_source</code>, the value for the firewall source.</p>
+<p>Note: The value for the <code>nagios_server</code> variable is derived from a global parameter set in Foreman (<code>nagios_server</code>), because the paremeter is used across multiple modules. You need to set that manually in Foreman under “Global Parameters”. Same for <code>nagios_source</code>, the value for the firewall source, which should point to the source IP or source range for the nagios server querying NRPE.</p>
 </blockquote>
 
 <h2 id="label-Repo+Documentation">Repo Documentation</h2>