diff --git a/meshsms.js b/meshsms.js
index 138e7a2a..bc29dad8 100644
--- a/meshsms.js
+++ b/meshsms.js
@@ -138,13 +138,13 @@ module.exports.CreateMeshSMS = function (parent) {
             if (sms.protocol == 'https:') {
                 // HTTPS GET request
                 const options = { hostname: sms.hostname, port: sms.port ? sms.port : 443, path: sms.path, method: 'GET', rejectUnauthorized: false };
-                const request = require('https').request(options, function (res) { parent.debug('email', 'SMS result: ' + res.statusCode); func(res.statusCode == 200, (res.statusCode == 200) ? null : res.statusCode, null); res.on('data', function (d) { }); });
+                const request = require('https').request(options, function (res) { parent.debug('email', 'SMS result: ' + res.statusCode); if (func != null) { func(res.statusCode == 200, (res.statusCode == 200) ? null : res.statusCode, null); } res.on('data', function (d) { }); });
                 request.on('error', function (err) { parent.debug('email', 'SMS error: ' + err); if (func != null) { func(false, err, null); } });
                 request.end();
             } else {
                 // HTTP GET request
                 const options = { hostname: sms.hostname, port: sms.port ? sms.port : 80, path: sms.path, method: 'GET' };
-                const request = require('http').request(options, function (res) { parent.debug('email', 'SMS result: ' + res.statusCode); func(res.statusCode == 200, (res.statusCode == 200) ? null : res.statusCode, null); res.on('data', function (d) { }); });
+                const request = require('http').request(options, function (res) { parent.debug('email', 'SMS result: ' + res.statusCode); if (func != null) { func(res.statusCode == 200, (res.statusCode == 200) ? null : res.statusCode, null); } res.on('data', function (d) { }); });
                 request.on('error', function (err) { parent.debug('email', 'SMS error: ' + err); if (func != null) { func(false, err, null); } });
                 request.end();
             }