diff --git a/pyttsx3/drivers/nsss.py b/pyttsx3/drivers/nsss.py
index 6cf5f81..1b27ef9 100644
--- a/pyttsx3/drivers/nsss.py
+++ b/pyttsx3/drivers/nsss.py
@@ -2,7 +2,7 @@
 from Foundation import *
 from AppKit import NSSpeechSynthesizer
 from PyObjCTools import AppHelper
-from ..voice import Voice
+from pyttsx3.voice import Voice
 
 
 def buildDriver(proxy):
@@ -60,8 +60,7 @@ def _toVoice(self, attr):
         except KeyError:
             lang = attr['VoiceLanguage']
         return Voice(attr['VoiceIdentifier'], attr['VoiceName'],
-                     [lang], attr['VoiceGender'],
-                     attr['VoiceAge'])
+                     [lang], attr['VoiceGender'])
 
     @objc.python_method
     def getProperty(self, name):
@@ -100,7 +99,10 @@ def setProperty(self, name, value):
     @objc.python_method
     def save_to_file(self, text, filename):
         url = Foundation.NSURL.fileURLWithPath_(filename)
+        import time
+
         self._tts.startSpeakingString_toURL_(text, url)
+        time.sleep(max(1, len(text) * 0.01))
 
     def speechSynthesizer_didFinishSpeaking_(self, tts, success):
         if not self._completed: