diff --git a/dev/js/spec/menuSpec.js b/dev/js/spec/menuSpec.js
index ba6f1fd..09848fc 100644
--- a/dev/js/spec/menuSpec.js
+++ b/dev/js/spec/menuSpec.js
@@ -1608,10 +1608,12 @@
       // This will normally be done on 
       menu.slider()._rulerHeight = 100;
       menu.slider()._sliderHeight = 40;
+      menu.slider()._event.initOffset = 0;
       expect(menu.slider().length()).toEqual(5);
 
       menu.slider().movetoRel(10);
       expect(menu.slider().offset()).toEqual(0);
+
       expect(menu.shownItem(0).active()).toBe(true);
       expect(menu.shownItem(0).lcField()).toEqual(' constituency');
       menu.slider().movetoRel(24);