diff --git a/src/calibre/devices/mtp/driver.py b/src/calibre/devices/mtp/driver.py
index 5d0e53d8de35..266e1cf50c2a 100644
--- a/src/calibre/devices/mtp/driver.py
+++ b/src/calibre/devices/mtp/driver.py
@@ -94,7 +94,7 @@ def is_folder_ignored(self, storage_or_storage_id, path,
         # Top level ignores
         if lpath[0] in {
             'alarms', 'dcim', 'movies', 'music', 'notifications',
-            'pictures', 'ringtones', 'samsung', 'sony', 'htc', 'bluetooth',
+            'pictures', 'ringtones', 'samsung', 'sony', 'htc', 'bluetooth', 'fonts', 'system',
             'games', 'lost.dir', 'video', 'whatsapp', 'image', 'com.zinio.mobile.android.reader'}:
             return True