diff --git a/solr/core/src/java/org/apache/solr/core/ConfigOverlay.java b/solr/core/src/java/org/apache/solr/core/ConfigOverlay.java
index d8a7f8c4b12..34729995c63 100644
--- a/solr/core/src/java/org/apache/solr/core/ConfigOverlay.java
+++ b/solr/core/src/java/org/apache/solr/core/ConfigOverlay.java
@@ -230,10 +230,9 @@ public class ConfigOverlay implements MapSerializable {
 
   @Override
   public Map<String, Object> toMap(Map<String, Object> map) {
-    Map result = new LinkedHashMap();
-    result.put(ZNODEVER, znodeVersion);
-    result.putAll(data);
-    return result;
+    map.put(ZNODEVER, znodeVersion);
+    map.putAll(data);
+    return map;
   }
 
   public Map<String, Map> getNamedPlugins(String typ) {