1 files changed, 2 insertions, 2 deletions
diff --git a/core/src/main/java/org/elasticsearch/action/admin/cluster/allocation/ClusterAllocationExplainRequest.java b/core/src/main/java/org/elasticsearch/action/admin/cluster/allocation/ClusterAllocationExplainRequest.java
index d80e58232a..aea1ee57dc 100644
--- a/core/src/main/java/org/elasticsearch/action/admin/cluster/allocation/ClusterAllocationExplainRequest.java
+++ b/core/src/main/java/org/elasticsearch/action/admin/cluster/allocation/ClusterAllocationExplainRequest.java
@@ -249,8 +249,8 @@ public class ClusterAllocationExplainRequest extends MasterNodeRequest<ClusterAl
     }
 
     private void checkVersion(Version version) {
-        if (version.before(Version.V_5_2_0_UNRELEASED)) {
-            throw new IllegalArgumentException("cannot explain shards in a mixed-cluster with pre-" + Version.V_5_2_0_UNRELEASED +
+        if (version.before(Version.V_5_2_0)) {
+            throw new IllegalArgumentException("cannot explain shards in a mixed-cluster with pre-" + Version.V_5_2_0 +
                                                " nodes, node version [" + version + "]");
         }
     }