diff --git a/x11/aminal/files/patch-vendor_github.com_kr_pty_ztypes__freebsd__arm64.go b/x11/aminal/files/patch-vendor_github.com_kr_pty_ztypes__freebsd__arm64.go
new file mode 100644
index 000000000000..172bf5328fbc
--- /dev/null
+++ b/x11/aminal/files/patch-vendor_github.com_kr_pty_ztypes__freebsd__arm64.go
@@ -0,0 +1,16 @@
+--- vendor/github.com/kr/pty/ztypes_freebsd_arm64.go.orig	2019-12-23 19:57:30 UTC
++++ vendor/github.com/kr/pty/ztypes_freebsd_arm64.go
+@@ -0,0 +1,13 @@
++// Created by cgo -godefs - DO NOT EDIT
++// cgo -godefs types_freebsd.go
++
++package pty
++
++const (
++	_C_SPECNAMELEN = 0x3f
++)
++
++type fiodgnameArg struct {
++	Len       int32
++	Buf       *byte
++}