diff --git a/src/main/java/org/aksw/iguana/cc/tasks/impl/Stresstest.java b/src/main/java/org/aksw/iguana/cc/tasks/impl/Stresstest.java
index 1338c92cc..ad36af220 100644
--- a/src/main/java/org/aksw/iguana/cc/tasks/impl/Stresstest.java
+++ b/src/main/java/org/aksw/iguana/cc/tasks/impl/Stresstest.java
@@ -102,7 +102,7 @@ public Stresstest(String suiteID, long stresstestID, Config config, ResponseBody
     public void run() {
         if (!warmupWorkers.isEmpty()) {
             SPARQLProtocolWorker.initHttpClient(warmupWorkers.size());
-            var warmupResults = executeWorkers(warmupWorkers); // warmup results will be dismissed
+            executeWorkers(warmupWorkers); // warmup results will be dismissed
             SPARQLProtocolWorker.closeHttpClient();
         }
         SPARQLProtocolWorker.initHttpClient(workers.size());