diff --git a/examples/gh-runner-gke-simple/main.tf b/examples/gh-runner-gke-simple/main.tf
index 4c16d36..60c7136 100644
--- a/examples/gh-runner-gke-simple/main.tf
+++ b/examples/gh-runner-gke-simple/main.tf
@@ -23,6 +23,6 @@ module "runner-gke" {
   cluster_suffix         = "k8s"
   gh_app_id              = "123456"
   gh_app_installation_id = "12345678"
-  gh_app_private_key     = "sample"
+  gh_app_private_key     = file("example.private-key.pem")
   gh_config_url          = "https://github.com/ORGANIZATION"
 }