diff --git a/src/calibre/devices/kindle/driver.py b/src/calibre/devices/kindle/driver.py
index 78b4368950..6e8bf8b8fb 100644
--- a/src/calibre/devices/kindle/driver.py
+++ b/src/calibre/devices/kindle/driver.py
@@ -284,11 +284,11 @@ class KINDLE(USBMS):
 
 class KINDLE2(KINDLE):
 
-    name           = 'Kindle 2/3 Device Interface'
+    name           = 'Kindle 2/3/4/Touch Device Interface'
     description    = _('Communicate with the Kindle 2/3 eBook reader.')
 
     FORMATS        = KINDLE.FORMATS + ['pdf', 'azw4', 'pobi']
-    DELETE_EXTS    = KINDLE.DELETE_EXTS
+    DELETE_EXTS    = KINDLE.DELETE_EXTS + ['.mbp1', '.mbs']
 
     PRODUCT_ID = [0x0002, 0x0004]
     BCD        = [0x0100]