diff --git a/server/src/main/java/org/elasticsearch/cluster/routing/allocation/decider/DiskThresholdDecider.java b/server/src/main/java/org/elasticsearch/cluster/routing/allocation/decider/DiskThresholdDecider.java
index 740fdb60a91..0a81d3c808f 100644
--- a/server/src/main/java/org/elasticsearch/cluster/routing/allocation/decider/DiskThresholdDecider.java
+++ b/server/src/main/java/org/elasticsearch/cluster/routing/allocation/decider/DiskThresholdDecider.java
@@ -68,7 +68,7 @@ import static org.elasticsearch.cluster.routing.allocation.DiskThresholdSettings
  * exact byte values for free space (like "500mb")
  *
  * <code>cluster.routing.allocation.disk.threshold_enabled</code> is used to
- * enable or disable this decider. It defaults to false (disabled).
+ * enable or disable this decider. It defaults to true (enabled).
  */
 public class DiskThresholdDecider extends AllocationDecider {