diff --git a/Lib/urllib/request.py b/Lib/urllib/request.py
index 9fa09cde24f..14ea0aad5ed 100644
--- a/Lib/urllib/request.py
+++ b/Lib/urllib/request.py
@@ -2283,7 +2283,7 @@ elif os.name == 'nt':
                         proxies['http'] = proxyServer
                     else:
                         proxies['http'] = 'http://%s' % proxyServer
-                        proxies['https'] = 'http://%s' % proxyServer
+                        proxies['https'] = 'https://%s' % proxyServer
                         proxies['ftp'] = 'ftp://%s' % proxyServer
             internetSettings.Close()
         except (WindowsError, ValueError, TypeError):