diff --git a/ee/spec/frontend/vue_shared/components/customizable_dashboard/customizable_dashboard_spec.js b/ee/spec/frontend/vue_shared/components/customizable_dashboard/customizable_dashboard_spec.js
index 5be2c6b3e693c8b99bdad281bb9515f769e86a62..ccfaef9c736a12d697c3bd3a139674aa4025ea16 100644
--- a/ee/spec/frontend/vue_shared/components/customizable_dashboard/customizable_dashboard_spec.js
+++ b/ee/spec/frontend/vue_shared/components/customizable_dashboard/customizable_dashboard_spec.js
@@ -56,6 +56,8 @@ describe('CustomizableDashboard', () => {
 
   describe('when mounted', () => {
     beforeEach(() => {
+      loadCSSFile.mockResolvedValue();
+
       createWrapper({
         widgets,
       });