diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/master/replication/ReplicationPeerManager.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/master/replication/ReplicationPeerManager.java
index 58c9e33510df..73166fb8bed1 100644
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/master/replication/ReplicationPeerManager.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/master/replication/ReplicationPeerManager.java
@@ -216,8 +216,6 @@ public void updatePeerConfig(String peerId, ReplicationPeerConfig peerConfig)
     // we need to use the new conf to overwrite the old one.
     newPeerConfigBuilder.putAllConfiguration(oldPeerConfig.getConfiguration());
     newPeerConfigBuilder.putAllConfiguration(peerConfig.getConfiguration());
-    newPeerConfigBuilder.putAllConfiguration(oldPeerConfig.getConfiguration());
-    newPeerConfigBuilder.putAllConfiguration(peerConfig.getConfiguration());
     ReplicationPeerConfig newPeerConfig = newPeerConfigBuilder.build();
     peerStorage.updatePeerConfig(peerId, newPeerConfig);
     peers.put(peerId, new ReplicationPeerDescription(peerId, desc.isEnabled(), newPeerConfig));