diff --git a/snippets/mask.md b/snippets/mask.md
index 7cdf3d104..d7eec0417 100644
--- a/snippets/mask.md
+++ b/snippets/mask.md
@@ -15,5 +15,5 @@ const mask = (cc, num = 4, mask = '*') =>
 ```js
 mask(1234567890); // '******7890'
 mask(1234567890, 3); // '*******890'
-mask(1234567890, -4, '$'); // '1234$$$$$$'
+mask(1234567890, -4, '$'); // '$$$$567890'
 ```
diff --git a/test/mask/mask.test.js b/test/mask/mask.test.js
index 33b85141e..b423586cf 100644
--- a/test/mask/mask.test.js
+++ b/test/mask/mask.test.js
@@ -5,7 +5,10 @@ test('Testing mask', (t) => {
 	//For more information on all the methods supported by tape
 	//Please go to https://github.com/substack/tape
 	t.true(typeof mask === 'function', 'mask is a Function');
-	//t.deepEqual(mask(args..), 'Expected');
+	t.equal(mask(1234567890), '******7890', "Replaces all but the last num of characters with the specified mask character");
+	t.equal(mask(1234567890, 3), '*******890', "Replaces all but the last num of characters with the specified mask character");
+	t.equal(mask(1234567890, -4, '$'), '$$$$567890', "Replaces all but the last num of characters with the specified mask character");
+
 	//t.equal(mask(args..), 'Expected');
 	//t.false(mask(args..), 'Expected');
 	//t.throws(mask(args..), 'Expected');