diff --git a/x-pack/plugins/infra/server/routes/overview/lib/create_top_nodes_query.ts b/x-pack/plugins/infra/server/routes/overview/lib/create_top_nodes_query.ts
index 20bf2324c29d1..1419971db175b 100644
--- a/x-pack/plugins/infra/server/routes/overview/lib/create_top_nodes_query.ts
+++ b/x-pack/plugins/infra/server/routes/overview/lib/create_top_nodes_query.ts
@@ -142,7 +142,7 @@ export const createTopNodesQuery = (
           timeseries: {
             date_histogram: {
               field: '@timestamp',
-              fixed_interval: '1m',
+              fixed_interval: options.bucketSize,
               extended_bounds: {
                 min: options.timerange.from,
                 max: options.timerange.to,
diff --git a/x-pack/test/api_integration/apis/metrics_ui/metrics_overview_top.ts b/x-pack/test/api_integration/apis/metrics_ui/metrics_overview_top.ts
index b3b3f53d6d6c3..0d88e78841f8e 100644
--- a/x-pack/test/api_integration/apis/metrics_ui/metrics_overview_top.ts
+++ b/x-pack/test/api_integration/apis/metrics_ui/metrics_overview_top.ts
@@ -47,6 +47,7 @@ export default function ({ getService }: FtrProviderContext) {
 
       expect(series.length).to.be(1);
       expect(series[0].id).to.be('demo-stack-mysql-01');
+      expect(series[0].timeseries[1].timestamp - series[0].timeseries[0].timestamp).to.be(300_000);
     });
   });
 }