diff --git a/bitcoinrpc/authproxy.py b/bitcoinrpc/authproxy.py
index abebe4b..6262770 100644
--- a/bitcoinrpc/authproxy.py
+++ b/bitcoinrpc/authproxy.py
@@ -90,6 +90,13 @@ def __init__(self, service_url, service_name=None, timeout=HTTP_TIMEOUT,
         else:
             port = self.__url.port
         (user, passwd) = (self.__url.username, self.__url.password)
+        try:
+            # This will not work with python2, try ignoring. Nothing bad
+            # will happen unless there are special quuoted characters in
+            # HTTP password.
+            passwd = urlparse.unquote(passwd)
+        except AttributeError:
+            pass
         try:
             user = user.encode('utf8')
         except AttributeError: