diff --git a/tabellio/pcfdb/sync.py b/tabellio/pcfdb/sync.py
index 8e0450d..e71f5a9 100644
--- a/tabellio/pcfdb/sync.py
+++ b/tabellio/pcfdb/sync.py
@@ -1098,7 +1098,7 @@ class SyncFromPcfDbView(BrowserView):
             if re.match('q[0-9]+$', intit):
                 logging.debug('skipping question, %s', intit)
                 if hasattr(self.questions_folder, dos_id):
-                    self.questions_folder.manage_delObjects(dos_id)
+                    self.questions_folder.manage_delObjects([dos_id])
                 continue
             if not hasattr(self.questions_folder, dos_id):
                 self.questions_folder.invokeFactory('tabellio.documents.question', dos_id)