diff --git a/preflight.sh b/preflight.sh
index 59062c3..d67da28 100755
--- a/preflight.sh
+++ b/preflight.sh
@@ -246,7 +246,6 @@ REQUIRED_VARS=(
   GITHUB_USERNAME GITHUB_TOKEN
   REPO_1_NAME REPO_2_NAME REPO_3_NAME
   RUNNER_DEFAULT_IMAGE RUNNER_DEFAULT_DATA_PATH LOCAL_RUNNER_DATA_PATH
-  GITHUB_MIRROR_TOKEN
   NGINX_CONTAINER_NAME NGINX_CONF_PATH SSL_MODE
 )