diff --git a/src/components/core/testing/private/describe-viewports.ts b/src/components/core/testing/private/describe-viewports.ts
index 6c538dfab1..09364e05dd 100644
--- a/src/components/core/testing/private/describe-viewports.ts
+++ b/src/components/core/testing/private/describe-viewports.ts
@@ -5,12 +5,11 @@ import {
   SbbBreakpointSmallMin,
   SbbBreakpointUltraMin,
   SbbBreakpointWideMin,
-  SbbBreakpointZeroMin,
 } from '@sbb-esta/lyne-design-tokens';
 import { setViewport } from '@web/test-runner-commands';
 
 const viewportSizes = {
-  zero: SbbBreakpointZeroMin,
+  zero: 320,
   micro: SbbBreakpointMicroMin,
   small: SbbBreakpointSmallMin,
   medium: SbbBreakpointMediumMin,