diff --git a/gui/kivy/main_window.py b/gui/kivy/main_window.py
index 32914b09..f8ba67cc 100644
--- a/gui/kivy/main_window.py
+++ b/gui/kivy/main_window.py
@@ -358,7 +358,7 @@ class ElectrumWindow(App):
         sendIntent.setAction(Intent.ACTION_SEND)
         sendIntent.setType("text/plain")
         sendIntent.putExtra(Intent.EXTRA_TEXT, JS(data))
-        PythonActivity = autoclass('org.renpy.android.PythonActivity')
+        PythonActivity = autoclass('org.kivy.android.PythonActivity')
         currentActivity = cast('android.app.Activity', PythonActivity.mActivity)
         it = Intent.createChooser(sendIntent, cast('java.lang.CharSequence', JS(title)))
         currentActivity.startActivity(it)
diff --git a/lib/bitcoin.py b/lib/bitcoin.py
index a3dd2095..d4010b66 100644
--- a/lib/bitcoin.py
+++ b/lib/bitcoin.py
@@ -26,6 +26,7 @@
 
 import hashlib
 import base64
+import os
 import re
 import hmac
 
@@ -208,9 +209,11 @@ def i2o_ECPublicKey(pubkey, compressed=False):
 ############ functions from pywallet #####################
 
 def hash_160(public_key):
-    #md = hashlib.new('ripemd')
-    from Crypto.Hash import RIPEMD
-    md = RIPEMD.new()
+    if 'ANDROID_DATA' in os.environ:
+        from Crypto.Hash import RIPEMD
+        md = RIPEMD.new()
+    else:
+        md = hashlib.new('ripemd')
     md.update(sha256(public_key))
     return md.digest()