diff --git a/mycaldav/models.py b/mycaldav/models.py
index 4ca4475..9c7f7d9 100644
--- a/mycaldav/models.py
+++ b/mycaldav/models.py
@@ -204,9 +204,9 @@ class cls_caldav():
                 if "$" in item.key:
                     item.team_transfert = True
                     item.key = item.key.replace("$","")
-                if "Manif" in item.key:
+                if "manif" in item.key.lower():
                     item.team_manif = True
-                    item.key = item.key.replace("Manif", "")
+                    item.key = item.key.lower().replace("manif", "")
                 item.name = arr[1]
             if "&" in item.name:
                 arr = item.name.split("&")