diff --git a/solr/core/src/test/org/apache/solr/cloud/OverseerCollectionProcessorTest.java b/solr/core/src/test/org/apache/solr/cloud/OverseerCollectionProcessorTest.java
index e256101bdd1..849d0e4583d 100644
--- a/solr/core/src/test/org/apache/solr/cloud/OverseerCollectionProcessorTest.java
+++ b/solr/core/src/test/org/apache/solr/cloud/OverseerCollectionProcessorTest.java
@@ -51,6 +51,7 @@ import org.easymock.Capture;
 import org.easymock.IAnswer;
 import org.eclipse.jetty.util.BlockingArrayQueue;
 import org.junit.After;
+import org.junit.AfterClass;
 import org.junit.Before;
 import org.junit.BeforeClass;
 import org.junit.Test;
@@ -105,6 +106,15 @@ public class OverseerCollectionProcessorTest extends SolrTestCaseJ4 {
     solrZkClientMock = createMock(SolrZkClient.class);
   }
   
+  @AfterClass
+  public static void tearDownOnce() {
+    workQueueMock = null;
+    shardHandlerMock = null;
+    zkStateReaderMock = null;
+    clusterStateMock = null;
+    solrZkClientMock = null;
+  }
+  
   @Before
   public void setUp() throws Exception {
     super.setUp();