diff -r 077681e35577 Lib/venv/__init__.py
--- a/Lib/venv/__init__.py	Fri Jan 13 19:08:47 2017 +0000
+++ b/Lib/venv/__init__.py	Fri Jan 13 19:22:08 2017 +0000
@@ -77,6 +77,10 @@
         """
         env_dir = os.path.abspath(env_dir)
         context = self.ensure_directories(env_dir)
+        # See issue 24875. We need system_site_packages to be False
+        # until after pip is installed.
+        true_system_site_packages = self.system_site_packages
+        self.system_site_packages = False
         self.create_configuration(context)
         self.setup_python(context)
         if self.with_pip:
@@ -84,6 +88,11 @@
         if not self.upgrade:
             self.setup_scripts(context)
             self.post_setup(context)
+        if true_system_site_packages:
+            # We had set it to False before, now
+            # restore it and rewrite the configuration
+            self.system_site_packages = True
+            self.create_configuration(context)
 
     def clear_directory(self, path):
         for fn in os.listdir(path):