diff --git a/TODO b/TODO
index c3e15d5..4999056 100644
--- a/TODO
+++ b/TODO
@@ -2,3 +2,4 @@ doc enhancement
 Limit hits/pages/downloads by rate
 Automatic tests
 Free memory as soon as possible
+Remove some IP from statistics
diff --git a/default_conf.py b/default_conf.py
index 3c42a1e..dcc8190 100644
--- a/default_conf.py
+++ b/default_conf.py
@@ -1,3 +1,5 @@
+# -*- coding: utf-8 -*-
+
 import os
 
 # Default configuration
diff --git a/iwla.py b/iwla.py
index 9eade1c..0c0f331 100755
--- a/iwla.py
+++ b/iwla.py
@@ -240,11 +240,10 @@ class IWLA(object):
         # TODO : remove return
         #return
 
-        with open(filename + '.tmp', 'wb+') as f:
+        with open(filename + '.tmp', 'wb+') as f, gzip.open(filename, 'w') as fzip:
             pickle.dump(obj, f)
             f.seek(0)
-            with gzip.open(filename, 'w') as fzip:
-                fzip.write(f.read())
+            fzip.write(f.read())
         os.remove(filename + '.tmp')
 
     def _deserialize(self, filename):
@@ -485,9 +484,8 @@ class IWLA(object):
 
         if not os.path.exists(gz_path) or\
            os.stat(path).st_mtime > build_time:
-            with open(path, 'rb') as f_in:
-                with gzip.open(gz_path, 'wb') as f_out:
-                    f_out.write(f_in.read())
+            with open(path, 'rb') as f_in, gzip.open(gz_path, 'wb') as f_out:
+                f_out.write(f_in.read())
 
     def _compressFiles(self, build_time, root):
         if not conf.compress_output_files: return