diff --git a/solr/solrj/src/test/org/apache/solr/common/cloud/TestCollectionStateWatchers.java b/solr/solrj/src/test/org/apache/solr/common/cloud/TestCollectionStateWatchers.java
index 51ee814d269..63f7b3e5712 100644
--- a/solr/solrj/src/test/org/apache/solr/common/cloud/TestCollectionStateWatchers.java
+++ b/solr/solrj/src/test/org/apache/solr/common/cloud/TestCollectionStateWatchers.java
@@ -62,6 +62,7 @@ public class TestCollectionStateWatchers extends SolrCloudTestCase {
 
   @Before
   public void prepareCluster() throws Exception {
+    cluster.deleteAllCollections();
     int missingServers = CLUSTER_SIZE - cluster.getJettySolrRunners().size();
     for (int i = 0; i < missingServers; i++) {
       cluster.startJettySolrRunner();