diff --git a/gradientfinder.js b/gradientfinder.js
index 84fe2e6..7bb653e 100644
--- a/gradientfinder.js
+++ b/gradientfinder.js
@@ -342,7 +342,7 @@
 
     function isStop(arr, start, end) {
         var startColor = getPixel(arr, start);
-        var increment = round(arr.length / 5);
+        var increment = Math.ceil(arr.length / 5);
         for (var i = end; i > start; i-= increment) {
             var endColor = getPixel(arr, i);
             var average = Color.getAvg(startColor, endColor);