diff --git a/package.json b/package.json
index 8aeb84c6..6f5df0f0 100644
--- a/package.json
+++ b/package.json
@@ -4,7 +4,7 @@
   "description": "Official AfricasTalking node.js API wrapper",
   "main": "index.js",
   "scripts": {
-    "test": "nyc mocha ./test",
+    "test": "nyc mocha ./test --exit --recursive",
     "test-windows": "nyc node_modules/mocha/bin/_mocha ./test"
   },
   "repository": {
diff --git a/test/fixtures.js b/test/fixtures.js
index 712135a9..89fd2fd6 100644
--- a/test/fixtures.js
+++ b/test/fixtures.js
@@ -1,8 +1,8 @@
 'use strict';
 
 exports.TEST_ACCOUNT = {
-  apiKey: 'YOUR_API_KEY',
-  username: 'YOUR_USERNAME',
+  apiKey: '',
+  username: 'sandbox',
   format: 'json',
 };
-exports.phoneNumber = '+2547xxxxxxxx';
+exports.phoneNumber = '+2547XXXXXXXX';
diff --git a/test/sms.js b/test/sms.js
index e2a45ba2..3e2b0c21 100644
--- a/test/sms.js
+++ b/test/sms.js
@@ -206,7 +206,8 @@ describe('SMS', function () {
     const count = 1000;
     const numbers = Array(count)
       .fill(0)
-      .map((num, idx) => `+254000${count + idx}`);
+      .map((num, idx) => `+2547000${count + idx}00`.substring(0, 13));
+
     const opts = {
       to: numbers,
       message: 'This is heavy single test',
@@ -219,7 +220,7 @@ describe('SMS', function () {
         done();
       })
       .catch(function (err) {
-        done(error);
+        done(err);
       });
   });