diff --git a/solr/CHANGES.txt b/solr/CHANGES.txt
index e6b9d7d1d0e..404863a9ed7 100644
--- a/solr/CHANGES.txt
+++ b/solr/CHANGES.txt
@@ -386,6 +386,9 @@ Bug Fixes
   updates meant for replicas to be lost. (Markus Jelsma, Timothy Potter,
   Joel Bernstein, Mark Miller)
 
+* SOLR-5645: A SolrCore reload via the CoreContainer will try and register in
+  zk again with the new SolrCore. (Mark Miller)
+
 Optimizations
 ----------------------  
 
diff --git a/solr/core/src/java/org/apache/solr/core/CoreContainer.java b/solr/core/src/java/org/apache/solr/core/CoreContainer.java
index 37c7ca45d0c..c8d0d59fbe7 100644
--- a/solr/core/src/java/org/apache/solr/core/CoreContainer.java
+++ b/solr/core/src/java/org/apache/solr/core/CoreContainer.java
@@ -719,7 +719,7 @@ public class CoreContainer {
         SolrCore newCore = core.reload(solrLoader, core);
         // keep core to orig name link
         solrCores.removeCoreToOrigName(newCore, core);
-        registerCore(false, name, newCore, false);
+        registerCore(false, name, newCore, false, false);
       } finally {
         solrCores.removeFromPendingOps(name);
       }