diff --git a/hetu-heuristic-index/src/test/java/io/hetu/core/heuristicindex/TestIndexResources.java b/hetu-heuristic-index/src/test/java/io/hetu/core/heuristicindex/TestIndexResources.java
index cea8827bb..b2c9016f7 100644
--- a/hetu-heuristic-index/src/test/java/io/hetu/core/heuristicindex/TestIndexResources.java
+++ b/hetu-heuristic-index/src/test/java/io/hetu/core/heuristicindex/TestIndexResources.java
@@ -508,12 +508,12 @@ public class TestIndexResources
 
     String getNewTableName()
     {
-        return "hive.test.t" + Integer.valueOf(count.getAndIncrement()).toString();
+        return "hive.test.t" + Integer.valueOf(count.getAndIncrement());
     }
 
     String getNewIndexName()
     {
-        return "idx" + Integer.valueOf(count.getAndIncrement()).toString();
+        return "idx" + Integer.valueOf(count.getAndIncrement());
     }
 
     Pair<Integer, MaterializedResult> runTwiceGetSplitAndMaterializedResult(String testerQuery)