diff --git a/src/calibre/devices/bebook/driver.py b/src/calibre/devices/bebook/driver.py
index 2fb756b532..6709cf217c 100644
--- a/src/calibre/devices/bebook/driver.py
+++ b/src/calibre/devices/bebook/driver.py
@@ -63,7 +63,7 @@ class BEBOOK(USBMS):
         except:
             card_num = None
 
-        if card_num is not None and main_num is not None and card_num < main_num:
+        if card_num is not None and main_num is not None and card_num > main_num:
             names['main'] = card
             names['carda'] = main