diff --git a/config/config.php b/config/config.php
index 6a28b70e..030df874 100755
--- a/config/config.php
+++ b/config/config.php
@@ -28,6 +28,7 @@ define('RASPI_ACCESS_CHECK_DNS', 'one.one.one.one');
 
 // Constant for the 5GHz wireless regulatory domain
 define('RASPI_5GHZ_ISO_ALPHA2', array('NL','US'));
+define('RASPI_5GHZ_MAX_CHANNEL', 165);
 
 // Optional services, set to true to enable.
 define('RASPI_WIFICLIENT_ENABLED', true);