diff --git a/eopayment/sips.py b/eopayment/sips.py
index d3b477f..f4dbddb 100644
--- a/eopayment/sips.py
+++ b/eopayment/sips.py
@@ -104,15 +104,15 @@ class Payment(PaymentCommon):
     def __init__(self, options, logger=LOGGER):
         self.options = options
         self.logger = logger
-        logger.debug('initializing sips payment class with %s' % options)
+        self.logger.debug('initializing sips payment class with %s' % options)
 
     def execute(self, executable, params):
         if PATHFILE in self.options:
             params[PATHFILE] = self.options[PATHFILE]
-        executable = os.path.join(self.options[BINPATH], executable)
+        executable = os.path.join(self.options.pop(BINPATH), executable)
         args = [executable] + ["%s=%s" % p for p in params.iteritems()]
         self.logger.debug('executing %s' % args)
-        result, _ = subprocess.Popen(args, executable=executable,
+        result,_ = subprocess.Popen(' '.join(args),
                 stdout=subprocess.PIPE, shell=True).communicate()
         if result[0] == '!':
             result = result[1:]
@@ -138,6 +138,7 @@ class Payment(PaymentCommon):
             params['customer_email'] = email
         if next_url:
             params['normal_return_url'] = next_url
+        params.pop('binpath')
         code, error, form = self.execute('request', params)
         if int(code) == 0:
             return params[ORDER_ID], HTML, form