diff --git a/src/lang/en_US.lang.php b/src/lang/en_US.lang.php
index 29c0697c..49f295b0 100644
--- a/src/lang/en_US.lang.php
+++ b/src/lang/en_US.lang.php
@@ -254,6 +254,7 @@ $sm_lang = array(
 		'sms_gateway_nexmo' => 'Nexmo',
 		'sms_gateway_smsgw' => 'SMSgw',
 		'sms_gateway_twilio' => 'Twilio',
+		'sms_gateway_gatewayapi' => 'GatewayAPI',
 		'sms_gateway_username' => 'Gateway username',
 		'sms_gateway_password' => 'Gateway password',
 		'sms_from' => 'Sender\'s phone number',