diff --git a/samples/scales/logarithmic/scatter.html b/samples/scales/logarithmic/scatter.html
index 3a496f4bd..30c5facda 100644
--- a/samples/scales/logarithmic/scatter.html
+++ b/samples/scales/logarithmic/scatter.html
@@ -137,7 +137,7 @@
 						position: 'bottom',
 						ticks: {
 							userCallback: function(tick) {
-								var remain = tick / (Math.pow(10, Math.floor(Chart.helpers.log10(tick))));
+								var remain = tick / (Math.pow(10, Math.floor(Chart.helpers.math.log10(tick))));
 								if (remain === 1 || remain === 2 || remain === 5) {
 									return tick.toString() + 'Hz';
 								}