diff --git a/lib/main.js b/lib/main.js
index 9214253..9db5e8a 100644
--- a/lib/main.js
+++ b/lib/main.js
@@ -175,8 +175,8 @@ export async function downloadUpdate(options, eventListeners) {
   if (!options.update) {
     return;
   }
-  if (rolledbackVersion === options.hash) {
-    logger(`rolledback hash ${rolledbackVersion}, ignored`);
+  if (rolledBackVersion === options.hash) {
+    logger(`rolledback hash ${rolledBackVersion}, ignored`);
     return;
   }
   if (downloadedHash === options.hash) {