diff --git a/src/calibre/devices/cybookg3/driver.py b/src/calibre/devices/cybookg3/driver.py
index f05b28b538..f573fb1b75 100644
--- a/src/calibre/devices/cybookg3/driver.py
+++ b/src/calibre/devices/cybookg3/driver.py
@@ -32,6 +32,7 @@ class CYBOOKG3(USBMS):
     STORAGE_CARD_VOLUME_LABEL = 'Cybook Gen 3 Storage Card'
     
     EBOOK_DIR_MAIN = "eBooks"
+    EBOOK_DIR_CARD = "eBooks"
     SUPPORTS_SUB_DIRS = True
     
     def upload_books(self, files, names, on_card=False, end_session=True,