diff --git a/platformio/builder/scripts/atmelavr.py b/platformio/builder/scripts/atmelavr.py
index 96e78552..6cb008be 100644
--- a/platformio/builder/scripts/atmelavr.py
+++ b/platformio/builder/scripts/atmelavr.py
@@ -12,7 +12,6 @@ from SCons.Script import (AlwaysBuild, Builder, COMMAND_LINE_TARGETS, Default,
 
 from platformio.util import reset_serialport
 
-
 env = DefaultEnvironment()
 
 env.Replace(
diff --git a/platformio/builder/scripts/timsp430.py b/platformio/builder/scripts/timsp430.py
index dbf1322d..6a82a0e3 100644
--- a/platformio/builder/scripts/timsp430.py
+++ b/platformio/builder/scripts/timsp430.py
@@ -7,13 +7,11 @@
 """
 
 from os.path import join
+from platform import system
 
 from SCons.Script import (AlwaysBuild, Builder, COMMAND_LINE_TARGETS, Default,
                           DefaultEnvironment)
 
-from platformio.util import get_system
-
-
 env = DefaultEnvironment()
 
 env.Replace(
@@ -55,7 +53,7 @@ env.Replace(
 
     UPLOADER=join("$PLATFORMTOOLS_DIR", "mspdebug", "mspdebug"),
     UPLOADERFLAGS=[
-        "$UPLOAD_PROTOCOL" if get_system() != "windows32" else "tilib",
+        "$UPLOAD_PROTOCOL" if system() != "Windows" else "tilib",
         "--force-reset"
     ],
     UPLOADCMD='$UPLOADER $UPLOADERFLAGS "prog $SOURCES"'
diff --git a/platformio/builder/scripts/titiva.py b/platformio/builder/scripts/titiva.py
index ab2ad8b8..ffb538d0 100644
--- a/platformio/builder/scripts/titiva.py
+++ b/platformio/builder/scripts/titiva.py
@@ -11,7 +11,6 @@ from os.path import join
 from SCons.Script import (AlwaysBuild, Builder, COMMAND_LINE_TARGETS, Default,
                           DefaultEnvironment)
 
-
 env = DefaultEnvironment()
 
 env.Replace(
diff --git a/platformio/pkgmanager.py b/platformio/pkgmanager.py
index 6822acbc..11c06991 100644
--- a/platformio/pkgmanager.py
+++ b/platformio/pkgmanager.py
@@ -14,7 +14,7 @@ from platformio.downloader import FileDownloader
 from platformio.exception import (InvalidPackageVersion, NonSystemPackage,
                                   UnknownPackage)
 from platformio.unpacker import FileUnpacker
-from platformio.util import get_home_dir, get_system
+from platformio.util import get_home_dir, get_systype
 
 
 class PackageManager(object):
@@ -66,11 +66,11 @@ class PackageManager(object):
             raise UnknownPackage(name)
 
         # check system platform
-        system = get_system()
-        builds = ([b for b in manifest[name] if b['system'] == "all" or system
+        systype = get_systype()
+        builds = ([b for b in manifest[name] if b['system'] == "all" or systype
                    in b['system']])
         if not builds:
-            raise NonSystemPackage(name, system)
+            raise NonSystemPackage(name, systype)
 
         if version:
             for b in builds:
diff --git a/platformio/util.py b/platformio/util.py
index 234085e7..3604c84d 100644
--- a/platformio/util.py
+++ b/platformio/util.py
@@ -4,7 +4,7 @@
 from os import name as os_name
 from os import getcwd, getenv, listdir, utime
 from os.path import dirname, expanduser, isfile, join, realpath
-from platform import architecture, system
+from platform import system, uname
 from subprocess import PIPE, Popen
 from time import sleep
 
@@ -18,8 +18,11 @@ except ImportError:
     from ConfigParser import ConfigParser
 
 
-def get_system():
-    return (system() + architecture()[0][:-3]).lower()
+def get_systype():
+    if system() == "Windows":
+        return "windows"
+    data = uname()
+    return ("%s_%s" % (data[0], data[4])).lower()
 
 
 def get_home_dir():
@@ -61,7 +64,7 @@ def change_filemtime(path, time):
 
 
 def exec_command(args):
-    use_shell = get_system() == "windows32"
+    use_shell = system() == "Windows"
     p = Popen(args, stdout=PIPE, stderr=PIPE, shell=use_shell)
     out, err = p.communicate()
     return dict(out=out.strip(), err=err.strip())