diff --git a/Lib/site.py b/Lib/site.py
index b9eabb03c..6d5dca641 100644
--- a/Lib/site.py
+++ b/Lib/site.py
@@ -275,6 +275,7 @@ def _getuserbase():
 
     if os.name == "nt":
         base = os.environ.get("APPDATA") or "~"
+        # XXX: RUSTPYTHON; please keep this change for site-packages
         return joinuser(base, "RustPython")
 
     if sys.platform == "darwin" and sys._framework:
@@ -368,6 +369,7 @@ def getsitepackages(prefixes=None):
 
             for libdir in libdirs:
                 path = os.path.join(prefix, libdir,
+                                    # XXX: RUSTPYTHON; please keep this change for site-packages
                                     "rustpython%d.%d" % sys.version_info[:2],
                                     "site-packages")
                 sitepackages.append(path)
diff --git a/Lib/test/test_site.py b/Lib/test/test_site.py
index c3b1cac69..fb9aca659 100644
--- a/Lib/test/test_site.py
+++ b/Lib/test/test_site.py
@@ -288,12 +288,14 @@ class HelperFunctionsTests(unittest.TestCase):
             if sys.platlibdir != "lib":
                 self.assertEqual(len(dirs), 2)
                 wanted = os.path.join('xoxo', sys.platlibdir,
+                                      # XXX: RUSTPYTHON
                                       'rustpython%d.%d' % sys.version_info[:2],
                                       'site-packages')
                 self.assertEqual(dirs[0], wanted)
             else:
                 self.assertEqual(len(dirs), 1)
             wanted = os.path.join('xoxo', 'lib',
+                                  # XXX: RUSTPYTHON
                                   'rustpython%d.%d' % sys.version_info[:2],
                                   'site-packages')
             self.assertEqual(dirs[-1], wanted)