diff --git a/SConstruct b/SConstruct
index 6c5e2d5ee..daf25e1ca 100644
--- a/SConstruct
+++ b/SConstruct
@@ -929,7 +929,12 @@ if env['python_package'] in ('full','default','new'):
     # See http://pypi.python.org/pypi/3to2
     if env['python_package'] == 'new':
         try:
-            ret = getCommandOutput('3to2','-l')
+            if env['OS'] == 'Windows':
+                python_dir = os.path.dirname(which(env['python_cmd']))
+                threetotwo_cmd = pjoin(python_dir, 'Scripts', '3to2')
+                ret = getCommandOutput(env['python_cmd'], threetotwo_cmd, '-l')
+            else:
+                ret = getCommandOutput('3to2', '-l')
         except OSError:
             ret = ''
         if 'print' in ret:
diff --git a/interfaces/cython/SConscript b/interfaces/cython/SConscript
index e3cf7e28e..c5f96adb1 100644
--- a/interfaces/cython/SConscript
+++ b/interfaces/cython/SConscript
@@ -213,7 +213,14 @@ if localenv['python_package'] == 'new':
     if env['python_convert_examples']:
         def convert_example(target, source, env):
             shutil.copyfile(source[0].abspath, target[0].abspath)
-            subprocess.call(['3to2', '--no-diff', '-n', '-w','-x', 'str',
+            if env['OS'] == 'Windows':
+                python_dir = os.path.dirname(which(env['python_cmd']))
+                threetotwo_cmd = pjoin(python_dir, 'Scripts', '3to2')
+                subprocess.call([env['python_cmd'], threetotwo_cmd, '--no-diff', '-n', '-w','-x', 'str',
+                             '-f', 'all', '-f', 'printfunction', '-x', 'print',
+                             '-x', 'open', target[0].abspath])
+            else:
+                subprocess.call(['3to2', '--no-diff', '-n', '-w','-x', 'str',
                              '-f', 'all', '-f', 'printfunction', '-x', 'print',
                              '-x', 'open', target[0].abspath])