diff --git a/sort.js b/sort.js
index d69413a..46e4052 100644
--- a/sort.js
+++ b/sort.js
@@ -1,6 +1,6 @@
 var sortNumber = function (number) {
    number.sort(function (a, b) {
-       if (a == b) {
+       if (a === b) {
            return 0;
        }
        return a < b ? -1 : 1;