diff --git a/src/netatmo.js b/src/netatmo.js
index c6416c7..376b1e8 100644
--- a/src/netatmo.js
+++ b/src/netatmo.js
@@ -60,7 +60,7 @@ class Netatmo {
       console.error('Failed to refresh token.');
       this.config.token = '';
       this.config.refresh_token = '';
-      await updateConfig();
+      await this.updateConfig();
       return;
     }