1 files changed, 4 insertions, 2 deletions
diff --git a/ext/pty/pty.c b/ext/pty/pty.c
index cfd7e4854e..d47acbe5b5 100644
--- a/ext/pty/pty.c
+++ b/ext/pty/pty.c
@@ -427,11 +427,13 @@ pty_getpty(argc, argv, self)
     establishShell(argc, argv, &info);
 
     rfptr->mode = rb_io_mode_flags("r");
-    rfptr->f = fdopen(info.fd, "r");
+    rfptr->fd = info.fd;
+    rfptr->f = rb_fdopen(info.fd, "r");
     rfptr->path = strdup(SlaveName);
 
     wfptr->mode = rb_io_mode_flags("w") | FMODE_SYNC;
-    wfptr->f = fdopen(dup(info.fd), "w");
+    wfptr->fd = dup(info.fd);
+    wfptr->f = rb_fdopen(wfptr->fd, "w");
     wfptr->path = strdup(SlaveName);
 
     res = rb_ary_new2(3);