diff --git a/src/sorting/bubblesort.js b/src/sorting/bubblesort.js
index 7b5440ee..ba55e00d 100644
--- a/src/sorting/bubblesort.js
+++ b/src/sorting/bubblesort.js
@@ -25,12 +25,12 @@
   function bubbleSort(array, cmp) {
     cmp = cmp || comparator;
     var temp;
-    for (var i = 0; i < array.length; i += 1) {
-      for (var j = i; j > 0; j -= 1) {
-        if (cmp(array[j], array[j - 1]) < 0) {
+    for (var i = 0; i < array.length - 1; i += 1) {
+      for (var j = 0; j < array.length - 1 - i; j += 1) {
+        if (cmp(array[j + 1], array[j]) < 0) {
           temp = array[j];
-          array[j] = array[j - 1];
-          array[j - 1] = temp;
+          array[j] = array[j + 1];
+          array[j + 1] = temp;
         }
       }
     }