diff --git a/setup.py b/setup.py
index 28500828..00be7482 100644
--- a/setup.py
+++ b/setup.py
@@ -1,7 +1,7 @@
 # Copyright (C) Ivan Kravets <me@ikravets.com>
 # See LICENSE for details.
 
-from sys import platform as sysplatform
+from platform import system
 
 from setuptools import find_packages, setup
 
@@ -22,7 +22,7 @@ setup(
         "pyserial",
         "requests",
         # "SCons"
-    ] + (["colorama"] if sysplatform.startswith("win") else []),
+    ] + (["colorama"] if system() == "Windows" else []),
     packages=find_packages(),
     package_data={"platformio": ["*.ini"]},
     entry_points={
diff --git a/tox.ini b/tox.ini
index ed614547..c57c77d3 100644
--- a/tox.ini
+++ b/tox.ini
@@ -14,7 +14,6 @@ usedevelop = True
 deps =
     isort
     flake8
-    wheel
 commands =
     pip install --egg scons