diff --git a/ansible/roles/es6/defaults/main.yml b/ansible/roles/es6/defaults/main.yml
index cae05a7399..c0063fcc90 100644
--- a/ansible/roles/es6/defaults/main.yml
+++ b/ansible/roles/es6/defaults/main.yml
@@ -40,7 +40,7 @@ conf_dir: ''
 data_dirs: ''
 # JVM custom parameters
 es_jvm_custom_parameters: ''
-es_heap_size: "2g"
+es_heap_size: "1g"
 es_plugins_reinstall: true
 es_plugins:
 - plugin: "repository-azure"