diff --git a/src/libprs500/devices/kindle/books.py b/src/libprs500/devices/kindle/books.py
index 203fc52078..3938bb0c8a 100755
--- a/src/libprs500/devices/kindle/books.py
+++ b/src/libprs500/devices/kindle/books.py
@@ -25,7 +25,8 @@ strftime = functools.partial(_strftime, zone=time.localtime)
 MIME_MAP   = { 
                 "azw" : "application/azw", 
                 "prc" : "application/prc", 
-                "txt" : "text/plain" 
+                "txt" : "text/plain",
+                'mobi': 'application/mobi', 
               }
 
 def sortable_title(title):
diff --git a/src/libprs500/devices/kindle/driver.py b/src/libprs500/devices/kindle/driver.py
index 919852a597..edfe389b1d 100755
--- a/src/libprs500/devices/kindle/driver.py
+++ b/src/libprs500/devices/kindle/driver.py
@@ -41,7 +41,7 @@ class File(object):
         
 
 class KINDLE(Device):
-    FORMATS     = ["azw", "prc", "txt"]   
+    FORMATS     = ["azw", "prc", "txt", 'mobi']   
     VENDOR_ID    = 0x1949 #: Amazon Vendor Id
     PRODUCT_ID   = 0x001 #: Product Id for the Kindle
     INTERNAL_STORAGE = 'INTERNAL_STORAGE'