diff --git a/app/agenda/page.tsx b/app/agenda/page.tsx
index ac6f433..b8e1450 100644
--- a/app/agenda/page.tsx
+++ b/app/agenda/page.tsx
@@ -336,8 +336,11 @@ export default async function CalendarPage() {
     }
   });
 
+  console.log(`[AGENDA] Cleanup check: ${syncCountCheck} syncs found for ${allMailCredentialIds.size} mail accounts`);
+
   // Only run full cleanup if there are multiple syncs (likely duplicates)
   if (syncCountCheck > allMailCredentialIds.size) {
+    console.log(`[AGENDA] Running cleanup: ${syncCountCheck} syncs > ${allMailCredentialIds.size} accounts (potential duplicates)`);
     const allSyncs = await prisma.calendarSync.findMany({
       where: {
         calendar: {
@@ -580,6 +583,7 @@ export default async function CalendarPage() {
     
     // Exclude "Privée"/"Default" calendars that are not actively synced
     if (isPrivateOrDefault && !hasActiveSync) {
+      console.log(`[AGENDA] Filtering out calendar ${cal.name} (${cal.id}): syncEnabled=${cal.syncConfig?.syncEnabled}, hasMailCredential=${!!cal.syncConfig?.mailCredential}`);
       return false;
     }
     return true;