diff --git a/README.md b/README.md
index 8b271bf3112e28c74a46d66c79e65c8877044c78..b5e2a33fb1e39f5be67e0aa1e560e6095d3d5c20 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@ Ansible role to install and configure graylog sidecars on Debian / Ubuntu / RedH
 
 ```yaml
 # Unique node id. Default uses '/etc/machine-id'
-node_id: 'file:/etc/machine-id'
+graylog_sidecar_node_id: 'file:/etc/machine-id'
 
 # Sidecar repository urls based on OS family
 sidecar_repo_urls:
diff --git a/defaults/main.yml b/defaults/main.yml
index 5f1d29701882538c66c5c72bc2baeff4d940ef62..5a49e87d4e6c24af2de62ed14d7a2ad62e02e359 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -1,4 +1,4 @@
-node_id: 'file:/etc/machine-id'
+graylog_sidecar_node_id: 'file:/etc/machine-id'
 sidecar_repo_urls:
   "RedHat": "https://packages.graylog2.org/repo/packages/graylog-sidecar-repository-1-5.noarch.rpm"
   "Debian": "https://packages.graylog2.org/repo/packages/graylog-sidecar-repository_1-5_all.deb"