diff --git a/sed/utils.c b/sed/utils.c

index 4028d98..2e74654 100644

--- a/sed/utils.c

+++ b/sed/utils.c

@@ -181,7 +181,7 @@ ck_mkstemp (char **p_filename, const char *tmpdir,

    /* The ownership might change, so omit some permissions at first

       so unauthorized users cannot nip in before the file is ready.

       mkstemp forces O_BINARY on cygwin, so use mkostemp instead.  */

-  mode_t save_umask = umask (0700);

+  mode_t save_umask = umask (0077);

   int fd = mkostemp (template, 0);

   umask (save_umask);

   if (fd == -1)