diff --git a/offlineimap/head/offlineimap/ui/Curses.py b/offlineimap/head/offlineimap/ui/Curses.py
index c51b321..ac26ef9 100644
--- a/offlineimap/head/offlineimap/ui/Curses.py
+++ b/offlineimap/head/offlineimap/ui/Curses.py
@@ -316,10 +316,10 @@ class Blinkenlights(BlinkenBase, UIBase):
 
             # New one.
             s.af[accountname] = CursesAccountFrame(s.c, accountname, s.iolock)
-            #s.iolock.acquire()
+            s.iolock.acquire()
             s.c.reset()
             s.setupwindows(dolock = 0)
-            #s.iolock.release()
+            s.iolock.release()
         finally:
             s.aflock.release()
         return s.af[accountname]