diff --git a/test/specs/core.scale.tests.js b/test/specs/core.scale.tests.js
index 605707eb3c1..f80b542ef7f 100644
--- a/test/specs/core.scale.tests.js
+++ b/test/specs/core.scale.tests.js
@@ -495,6 +495,9 @@ describe('Core.scale', function() {
 		it('should default to one layer for custom scales', function() {
 			var customScale = Chart.Scale.extend({
 				draw: function() {},
+				buildTicks: function() {
+					this.ticks = ['tick'];
+				},
 				convertTicksToLabels: function() {
 					return ['tick'];
 				}