diff --git a/src/calibre/devices/android/driver.py b/src/calibre/devices/android/driver.py
index 2c840c644a..08ecbd1ee3 100644
--- a/src/calibre/devices/android/driver.py
+++ b/src/calibre/devices/android/driver.py
@@ -19,10 +19,11 @@ class ANDROID(USBMS):
 
     VENDOR_ID   = {
             # HTC
-            0x0bb4 : { 0x0c02 : [0x100, 0x0227, 0x0226, 0x222],
-                       0x0c01 : [0x100, 0x0227, 0x0226],
-                       0x0ff9 : [0x0100, 0x0227, 0x0226],
-                       0x0c87 : [0x0100, 0x0227, 0x0226],
+            0x0bb4 : { 0xc02 : [0x100, 0x0227, 0x0226, 0x222],
+                       0xc01 : [0x100, 0x0227, 0x0226],
+                       0xff9 : [0x0100, 0x0227, 0x0226],
+                       0xc87 : [0x0100, 0x0227, 0x0226],
+                       0xc91 : [0x0100, 0x0227, 0x0226],
                        0xc92  : [0x100],
                        0xc97  : [0x226],
                        0xc99  : [0x0100],