diff --git a/hbase-server/src/test/java/org/apache/hadoop/hbase/master/balancer/BalancerTestBase.java b/hbase-server/src/test/java/org/apache/hadoop/hbase/master/balancer/BalancerTestBase.java
index 260a8e9094a..2527ed5ef4a 100644
--- a/hbase-server/src/test/java/org/apache/hadoop/hbase/master/balancer/BalancerTestBase.java
+++ b/hbase-server/src/test/java/org/apache/hadoop/hbase/master/balancer/BalancerTestBase.java
@@ -56,7 +56,7 @@ public class BalancerTestBase {
   static int regionId = 0;
 
   // This class is introduced because IP to rack resolution can be lengthy.
-  static class MockMapping implements DNSToSwitchMapping {
+  public static class MockMapping implements DNSToSwitchMapping {
     public MockMapping(Configuration conf) {
     }