diff --git a/docs/ecolyo/technical/services/index.md b/docs/ecolyo/technical/services/index.md
index 3ec602a86cc13e94c3285adc3b84fe32415b1169..536bc65a0f015501651b253133f81c3b69e77055 100644
--- a/docs/ecolyo/technical/services/index.md
+++ b/docs/ecolyo/technical/services/index.md
@@ -43,6 +43,8 @@ yarn run cozy-konnector-dev -m manifest.webapp <service.js>
 yarn run cozy-konnector-dev -m manifest.webapp ./build/services/enedisHalfHourMonthlyAnalysis/ecolyo.js
 ```
 
-_Don't forget to delete `token.json`_
+!!! bug "Expired token error"
+
+    If you have an "Expired token" error, you should remove `token.json`
 
 More details on the [cozy docs / Services / Execution](https://docs.cozy.io/en/howTos/dev/services/#execution).