diff -r c02f464dd721 Modules/posixmodule.c
--- a/Modules/posixmodule.c	Thu Sep 26 09:35:39 2013 -0700
+++ b/Modules/posixmodule.c	Sun Sep 29 22:24:05 2013 +0200
@@ -4271,7 +4271,10 @@
             find_data_handle = FindFirstFileW(lpFileName, &find_data);
 
             if(find_data_handle != INVALID_HANDLE_VALUE) {
-                is_link = find_data.dwReserved0 == IO_REPARSE_TAG_SYMLINK;
+                /* IO_REPARSE_TAG_SYMLINK if it's a symlink and
+                   IO_REPARSE_TAG_MOUNT_POINT if it's a junction point. */
+                is_link = find_data.dwReserved0 == IO_REPARSE_TAG_SYMLINK ||
+                          find_data.dwReserved0 == IO_REPARSE_TAG_MOUNT_POINT;
                 FindClose(find_data_handle);
             }
         }