diff --git a/colout/colout.py b/colout/colout.py
index 69cd78a..40335fd 100755
--- a/colout/colout.py
+++ b/colout/colout.py
@@ -31,6 +31,8 @@ signal.signal( signal.SIGPIPE, signal.SIG_DFL )
 # Global variable(s)
 ###############################################################################
 
+PY2 = sys.version_info.major == 2
+
 context = {}
 debug = False
 
@@ -753,7 +755,7 @@ def write(colored, stream = sys.stdout):
     """
     Write "colored" on sys.stdout, then flush.
     """
-    if six.PY2: # If Python 2.x: force unicode
+    if PY2: # If Python 2.x: force unicode
         if isinstance(colored, unicode):
             colored = colored.encode('utf-8')
     try:
diff --git a/setup.py b/setup.py
index daa8d35..a79d0cf 100644
--- a/setup.py
+++ b/setup.py
@@ -14,7 +14,7 @@ if sys.argv[-1] == 'publish':
 
 packages = ['colout']
 
-requires = ['argparse', 'pygments', 'babel']
+requires = ['argparse; python_version < "2.7"', 'pygments', 'babel']
 
 setup(
     name='colout',