diff --git a/indra/newview/viewer_manifest.py b/indra/newview/viewer_manifest.py
index debbcd7e3bf8e60338405b12820e8a99ccc2c1ea..c79c2aedf1dca9e8800a7433458881e688b58824 100755
--- a/indra/newview/viewer_manifest.py
+++ b/indra/newview/viewer_manifest.py
@@ -386,10 +386,7 @@ def package_finish(self):
         # If we're on a build machine, sign the code using our Authenticode certificate. JC
         sign_py = 'C:\\buildscripts\\code-signing\\sign.py'
         if os.path.exists(sign_py):
-            # Appears to require the "python" command to pass a proper argv
-            # to the script, but only on certain systems.  JC
-            self.run_command('python ' + sign_py + ' ' +
-                    self.dst_path_of(installer_file))
+            self.run_command(sign_py + ' ' + self.dst_path_of(installer_file))
         else:
             print "Skipping code signing,", sign_py, "does not exist"
         self.created_path(self.dst_path_of(installer_file))