diff --git a/src/index.js b/src/index.js
index 12b10aa1a6a57f3e2d78296355403e0d8b145a68..87342949f6d3f6a111834e160f59d7ce1a194a5b 100755
--- a/src/index.js
+++ b/src/index.js
@@ -133,28 +133,37 @@ async function getData(token, idPCE) {
  * Return the list of daily data
  */
 async function cleanOldData() {
-  if(moment() > moment("26/11/2020", "DD/MM/YYYY")){
+  if(moment().isAfter("2020-11-26")){
     log('debug', 'No cleaning to do')
     return false
   } else {
     log('debug', 'Start cleaning old data')
     const documents = await cozyClient.data.findAll('com.grandlyon.grdf.day')
     if (documents && documents.length > 0) {
+      const result = []
       for (const doc of documents) {
-        await cozyClient.data.delete('com.grandlyon.grdf.day', doc)
+        const deleteResult = await cozyClient.data.delete('com.grandlyon.grdf.day', doc)
+        result.push(deleteResult)
       }
+      log("debug", "NB OF DELETED OLD DAY DATA : " + result.length)
     }
     const documents = await cozyClient.data.findAll('com.grandlyon.grdf.month')
     if (documents && documents.length > 0) {
+      const result = []
       for (const doc of documents) {
-        await cozyClient.data.delete('com.grandlyon.grdf.month', doc)
+        const deleteResult = await cozyClient.data.delete('com.grandlyon.grdf.month', doc)
+        result.push(deleteResult)
       }
+      log("debug", "NB OF DELETED OLD MONTH DATA : " + result.length)
     }
     const documents = await cozyClient.data.findAll('com.grandlyon.grdf.year')
     if (documents && documents.length > 0) {
+      const result = []
       for (const doc of documents) {
         await cozyClient.data.delete('com.grandlyon.grdf.year', doc)
+        result.push(deleteResult)
       }
+      log("debug", "NB OF DELETED OLD YEAR DATA : " + result.length)
     }
     return true
   }