diff --git a/offlineimap/folder/IMAP.py b/offlineimap/folder/IMAP.py
index 05edaf0..efba10c 100644
--- a/offlineimap/folder/IMAP.py
+++ b/offlineimap/folder/IMAP.py
@@ -368,6 +368,7 @@ class IMAPFolder(BaseFolder):
             try:
                 imapobj.select(self.getfullname())
             except imapobj.readonly:
+		# unsure, whether this can be reached
                 UIBase.getglobalui().flagstoreadonly(self, uidlist, flags)
                 return
             r = imapobj.uid('store',