diff --git a/theodolite-benchmarks/docker-test/uc4-hazelcastjet-docker-compose/docker-compose.yml b/theodolite-benchmarks/docker-test/uc4-hazelcastjet-docker-compose/docker-compose.yml
index 532f38e9ec5ef79a976bb5d05edb301aef8d665b..2abbefe7984dfb16e97f678c8f938858a0711403 100644
--- a/theodolite-benchmarks/docker-test/uc4-hazelcastjet-docker-compose/docker-compose.yml
+++ b/theodolite-benchmarks/docker-test/uc4-hazelcastjet-docker-compose/docker-compose.yml
@@ -62,4 +62,4 @@ services:
       KAFKA_BOOTSTRAP_SERVERS: kafka:9092
       SCHEMA_REGISTRY_URL: http://schema-registry:8081
       NUM_SENSORS: 4
-      NUM_NESTED_GROUPS: 4
+      NUM_NESTED_GROUPS: 3