diff --git a/weboob/applications/parceloob/parceloob.py b/weboob/applications/parceloob/parceloob.py
index eb4229ae8f7770c5b8f17b3f34d2e761113199d0..7994f02adebeb044ec3c60970d08ac39c1884756 100644
--- a/weboob/applications/parceloob/parceloob.py
+++ b/weboob/applications/parceloob/parceloob.py
@@ -131,9 +131,13 @@ def do_untrack(self, line):
             pass
 
         if not removed:
-            parcel = self.get_object(line, 'get_parcel_tracking')
+            try:
+                parcel = self.get_object(line, 'get_parcel_tracking')
+            except ParcelNotFound:
+                parcel = False
+
             if not parcel:
-                print >>self.stderr, 'Error: the parcel "%s" is not found' % line
+                print >>self.stderr, 'Error: the parcel "%s" is not found. Did you provide the full id@backend parameter?' % line
                 return 2
 
             try: