diff --git a/apps/web/src/components/ui/charts/BusterChartJS/hooks/useOptions/useY2Axis.test.ts b/apps/web/src/components/ui/charts/BusterChartJS/hooks/useOptions/useY2Axis.test.ts
index 15a55e780..dabea9bf9 100644
--- a/apps/web/src/components/ui/charts/BusterChartJS/hooks/useOptions/useY2Axis.test.ts
+++ b/apps/web/src/components/ui/charts/BusterChartJS/hooks/useOptions/useY2Axis.test.ts
@@ -22,6 +22,10 @@ describe('useY2Axis', () => {
     y2AxisScaleType: 'linear' as const,
     columnMetadata: [],
     columnSettings: {},
+    yAxis: {
+      min: undefined,
+      max: undefined,
+    },
   } as Parameters<typeof useY2Axis>[0];
 
   it('should return undefined display when chart type is not Combo', () => {