diff --git a/cars/v1/vanilla/config.ini b/cars/v1/vanilla/config.ini
index 1dfa354..1df04ad 100644
--- a/cars/v1/vanilla/config.ini
+++ b/cars/v1/vanilla/config.ini
@@ -8,3 +8,4 @@ docker_image=docker.elastic.co/elasticsearch/elasticsearch
 build.jdk = 8
 # list of JDK major versions that are used to run Elasticsearch
 runtime.jdk = 8
+runtime.jdk.bundled = false