diff --git a/packages/core/web-reporter-ui/src/components/Charts/ChartRangeArea.tsx b/packages/core/web-reporter-ui/src/components/Charts/ChartRangeArea.tsx
index b1daa50e..4880f62b 100644
--- a/packages/core/web-reporter-ui/src/components/Charts/ChartRangeArea.tsx
+++ b/packages/core/web-reporter-ui/src/components/Charts/ChartRangeArea.tsx
@@ -62,7 +62,7 @@ export const ChartRangeArea = ({
         width: [...Array(series.length / 2).fill(2), ...Array(series.length / 2).fill(0)],
       },
       xaxis: {
-        type: "numeric",
+        type: "category",
         min: 0,
         labels: {
           ...labels,