diff --git a/theodolite-benchmarks/uc2-hazelcastjet/src/main/java/rocks/theodolite/benchmarks/uc2/hazelcastjet/HistoryService.java b/theodolite-benchmarks/uc2-hazelcastjet/src/main/java/rocks/theodolite/benchmarks/uc2/hazelcastjet/HistoryService.java
index e640dc9c85d4b6a9f3b40e77eb7ae4dd14ad9c19..9025ae35a15e17ae7501547777bfd63d2dbcb5a3 100644
--- a/theodolite-benchmarks/uc2-hazelcastjet/src/main/java/rocks/theodolite/benchmarks/uc2/hazelcastjet/HistoryService.java
+++ b/theodolite-benchmarks/uc2-hazelcastjet/src/main/java/rocks/theodolite/benchmarks/uc2/hazelcastjet/HistoryService.java
@@ -34,8 +34,7 @@ public class HistoryService extends HazelcastJetService {
             StringSerializer.class.getCanonicalName(),
             StringSerializer.class.getCanonicalName());
 
-    final String kafkaOutputTopic =
-        this.config.getProperty(Uc2ConfigurationKeys.KAFKA_OUTPUT_TOPIC).toString();
+    final String kafkaOutputTopic = this.config.getString(Uc2ConfigurationKeys.KAFKA_OUTPUT_TOPIC);
 
     final Duration downsampleInterval = Duration.ofMinutes(
         this.config.getInt(Uc2ConfigurationKeys.DOWNSAMPLE_INTERVAL_MINUTES));