diff --git a/server/src/main/java/org/elasticsearch/action/admin/cluster/node/stats/NodesStatsRequest.java b/server/src/main/java/org/elasticsearch/action/admin/cluster/node/stats/NodesStatsRequest.java
index 14c4d95793b92..7b69ba3a2f9b6 100644
--- a/server/src/main/java/org/elasticsearch/action/admin/cluster/node/stats/NodesStatsRequest.java
+++ b/server/src/main/java/org/elasticsearch/action/admin/cluster/node/stats/NodesStatsRequest.java
@@ -331,7 +331,7 @@ private enum Metric {
         SCRIPT("script"),
         DISCOVERY("discovery"),
         INGEST("ingest"),
-        ADAPTIVE_SELECTION("adaptiveSelection");
+        ADAPTIVE_SELECTION("adaptive_selection");
 
         private String metricName;