diff --git a/hbase-common/src/main/java/org/apache/hadoop/hbase/net/Address.java b/hbase-common/src/main/java/org/apache/hadoop/hbase/net/Address.java
index cdcd82472e3..61b445fcefe 100644
--- a/hbase-common/src/main/java/org/apache/hadoop/hbase/net/Address.java
+++ b/hbase-common/src/main/java/org/apache/hadoop/hbase/net/Address.java
@@ -22,7 +22,6 @@ import org.apache.commons.lang3.StringUtils;
 import org.apache.yetus.audience.InterfaceAudience;
 
 import org.apache.hbase.thirdparty.com.google.common.net.HostAndPort;
-import java.util.Locale;
 
 /**
  * An immutable type to hold a hostname and port combo, like an Endpoint or
@@ -77,7 +76,7 @@ public class Address implements Comparable<Address> {
    */
   @Deprecated
   public String getHostname() {
-    return this.hostAndPort.getHost().toLowerCase(Locale.ROOT);
+    return this.hostAndPort.getHost();
   }
 
   public int getPort() {
@@ -86,7 +85,7 @@ public class Address implements Comparable<Address> {
 
   @Override
   public String toString() {
-    return this.hostAndPort.toString().toLowerCase(Locale.ROOT);
+    return this.hostAndPort.toString();
   }
 
   /**