diff --git a/setup.py b/setup.py
index 7ba036b56e..c5ae133b34 100644
--- a/setup.py
+++ b/setup.py
@@ -5,22 +5,22 @@ import os
 import sys
 
 class osx_install_data(install_data):
-    # On MacOS the plattform specific lib dir is /System/Library/Framework/Python/.../
-    # which is wrong. Python 2.5 supplied with MacOS 10.5 has an Aplle specific fix
-    # for this in distutils.command.install_data#306 It fixes install_lib but not
+    # On MacOS, the platform-specific lib dir is /System/Library/Framework/Python/.../
+    # which is wrong. Python 2.5 supplied with MacOS 10.5 has an Apple-specific fix
+    # for this in distutils.command.install_data#306. It fixes install_lib but not
     # install_data, which is why we roll our own install_data class.
 
-    def finalize_options (self):
-        # By the time finalize_options is called install.install_lib is set to the
-        # fixed directory. so we set the installdir for to install_lib, the
+    def finalize_options(self):
+        # By the time finalize_options is called, install.install_lib is set to the
+        # fixed directory, so we set the installdir to install_lib. The
         # install_data class uses ('install_data', 'install_dir') instead.
         self.set_undefined_options('install', ('install_lib', 'install_dir'))
         install_data.finalize_options(self)
 
 if sys.platform == "darwin": 
-    cmdclasses = {'install_data': osx_install_data } 
+    cmdclasses = {'install_data': osx_install_data} 
 else: 
-    cmdclasses = {'install_data': install_data } 
+    cmdclasses = {'install_data': install_data} 
 
 def fullsplit(path, result=None):
     """