diff --git a/x-pack/plugins/monitoring/server/lib/elasticsearch/nodes/get_nodes/__test__/__snapshots__/get_metric_aggs.test.js.snap b/x-pack/plugins/monitoring/server/lib/elasticsearch/nodes/get_nodes/__test__/__snapshots__/get_metric_aggs.test.js.snap
index b5f8ad2b8b84..8b5b445b9311 100644
--- a/x-pack/plugins/monitoring/server/lib/elasticsearch/nodes/get_nodes/__test__/__snapshots__/get_metric_aggs.test.js.snap
+++ b/x-pack/plugins/monitoring/server/lib/elasticsearch/nodes/get_nodes/__test__/__snapshots__/get_metric_aggs.test.js.snap
@@ -18,7 +18,7 @@ Object {
     },
     "date_histogram": Object {
       "field": "timestamp",
-      "interval": "30s",
+      "fixed_interval": "30s",
       "min_doc_count": 1,
     },
   },
@@ -38,7 +38,7 @@ Object {
     },
     "date_histogram": Object {
       "field": "timestamp",
-      "interval": "30s",
+      "fixed_interval": "30s",
       "min_doc_count": 1,
     },
   },
@@ -76,7 +76,7 @@ Object {
     },
     "date_histogram": Object {
       "field": "timestamp",
-      "interval": "30s",
+      "fixed_interval": "30s",
       "min_doc_count": 1,
     },
   },
@@ -109,7 +109,7 @@ Object {
     },
     "date_histogram": Object {
       "field": "timestamp",
-      "interval": "30s",
+      "fixed_interval": "30s",
       "min_doc_count": 1,
     },
   },
diff --git a/x-pack/plugins/monitoring/server/lib/elasticsearch/nodes/get_nodes/get_metric_aggs.js b/x-pack/plugins/monitoring/server/lib/elasticsearch/nodes/get_nodes/get_metric_aggs.js
index 9f135ae1da38..ff2d0470968b 100644
--- a/x-pack/plugins/monitoring/server/lib/elasticsearch/nodes/get_nodes/get_metric_aggs.js
+++ b/x-pack/plugins/monitoring/server/lib/elasticsearch/nodes/get_nodes/get_metric_aggs.js
@@ -47,7 +47,7 @@ export function getMetricAggs(listingMetrics, bucketSize) {
       date_histogram: {
         field: 'timestamp',
         min_doc_count: 1,
-        interval: bucketSize + 's'
+        fixed_interval: bucketSize + 's'
       },
       aggs: metric.aggs || metricAgg
     };