diff --git a/.travis.yml b/.travis.yml
index 6002d8f..e79850e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,8 @@
 language: python
 python:
   - "3.4"
+notifications:
+  email: false
 before_install:
   - sudo apt-get update
   - sudo apt-get install -y checkinstall build-essential
diff --git a/toxygen/history.py b/toxygen/history.py
index fe7d3ee..586981a 100644
--- a/toxygen/history.py
+++ b/toxygen/history.py
@@ -1,6 +1,3 @@
-# -*- coding: utf-8 -*-
-
-
 from sqlite3 import connect
 import settings
 from os import chdir
diff --git a/toxygen/loginscreen.py b/toxygen/loginscreen.py
index b6d0811..fbaa4e3 100644
--- a/toxygen/loginscreen.py
+++ b/toxygen/loginscreen.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-
 try:
     from PySide import QtCore, QtGui
 except ImportError:
diff --git a/toxygen/main.py b/toxygen/main.py
index 44e6cbe..0f6932e 100644
--- a/toxygen/main.py
+++ b/toxygen/main.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-
 import sys
 from loginscreen import LoginScreen
 import profile
diff --git a/toxygen/tox.py b/toxygen/tox.py
index 862badd..0545653 100644
--- a/toxygen/tox.py
+++ b/toxygen/tox.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from ctypes import c_char_p, Structure, c_bool, byref, c_int, c_size_t, POINTER, c_uint16, c_void_p, c_uint64
 from ctypes import create_string_buffer, ArgumentError, CFUNCTYPE, c_uint32, sizeof, c_uint8
 from toxcore_enums_and_consts import *
diff --git a/toxygen/util.py b/toxygen/util.py
index 468884b..07e78b3 100644
--- a/toxygen/util.py
+++ b/toxygen/util.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-
 import os
 import time
 import shutil
@@ -80,6 +78,7 @@ def append_slash(s):
     return s
 
 
+@cached
 def is_64_bit():
     return sys.maxsize > 2 ** 32