diff --git a/hbase-server/src/test/java/org/apache/hadoop/hbase/coprocessor/example/TestZooKeeperScanPolicyObserver.java b/hbase-server/src/test/java/org/apache/hadoop/hbase/coprocessor/example/TestZooKeeperScanPolicyObserver.java
index 91f0b8133da..0cabe58ffff 100644
--- a/hbase-server/src/test/java/org/apache/hadoop/hbase/coprocessor/example/TestZooKeeperScanPolicyObserver.java
+++ b/hbase-server/src/test/java/org/apache/hadoop/hbase/coprocessor/example/TestZooKeeperScanPolicyObserver.java
@@ -26,6 +26,7 @@ import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.hbase.HBaseTestingUtility;
 import org.apache.hadoop.hbase.HColumnDescriptor;
 import org.apache.hadoop.hbase.HTableDescriptor;
+import org.apache.hadoop.hbase.MediumTests;
 import org.apache.hadoop.hbase.client.Get;
 import org.apache.hadoop.hbase.client.HConnectionManager;
 import org.apache.hadoop.hbase.client.HTable;
@@ -40,7 +41,9 @@ import org.apache.zookeeper.ZooKeeper;
 import org.junit.AfterClass;
 import org.junit.BeforeClass;
 import org.junit.Test;
+import org.junit.experimental.categories.Category;
 
+@Category(MediumTests.class)
 public class TestZooKeeperScanPolicyObserver {
   private static final Log LOG = LogFactory.getLog(TestZooKeeperScanPolicyObserver.class);
   private final static HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility();