diff --git a/winsup/cygwin/tty.cc b/winsup/cygwin/tty.cc
index 80465ea5d..9a295244f 100644
--- a/winsup/cygwin/tty.cc
+++ b/winsup/cygwin/tty.cc
@@ -88,6 +88,7 @@ create_tty_master (int ttynum)
       cygwin_gethostname (our_utmp.ut_host, sizeof (our_utmp.ut_host));
       __small_sprintf (our_utmp.ut_line, "tty%d", ttynum);
       our_utmp.ut_type = USER_PROCESS;
+      our_utmp.ut_pid = myself->pid;
       myself->ctty = ttynum;
       login (&our_utmp);
     }