diff --git a/lib/services/caldav-sync.ts b/lib/services/caldav-sync.ts
index 3f3a8b7..7af7a70 100644
--- a/lib/services/caldav-sync.ts
+++ b/lib/services/caldav-sync.ts
@@ -51,7 +51,10 @@ export async function discoverInfomaniakCalendars(
     
     // List all calendars using PROPFIND on root
     logger.debug('[CALDAV] Fetching directory contents from root');
-    const items = await client.getDirectoryContents('/');
+    const itemsResult = await client.getDirectoryContents('/');
+    
+    // Handle both FileStat[] and ResponseDataDetailed<FileStat[]> return types
+    const items = Array.isArray(itemsResult) ? itemsResult : itemsResult.data;
     
     logger.debug('[CALDAV] Found items in root directory', {
       count: items.length,