diff --git a/lib/std/os/linux/bpf/btf.zig b/lib/std/os/linux/bpf/btf.zig
index cd086c97f4..5338994aff 100644
--- a/lib/std/os/linux/bpf/btf.zig
+++ b/lib/std/os/linux/bpf/btf.zig
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: MIT
+// Copyright (c) 2015-2020 Zig Contributors
+// This file is part of [zig](https://ziglang.org/), which is MIT licensed.
+// The MIT license requires this copyright notice to be included in all copies
+// and substantial portions of the software.
 const magic = 0xeb9f;
 const version = 1;
 
diff --git a/lib/std/os/linux/bpf/btf_ext.zig b/lib/std/os/linux/bpf/btf_ext.zig
index 05d5d57059..ce412fdf4e 100644
--- a/lib/std/os/linux/bpf/btf_ext.zig
+++ b/lib/std/os/linux/bpf/btf_ext.zig
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: MIT
+// Copyright (c) 2015-2020 Zig Contributors
+// This file is part of [zig](https://ziglang.org/), which is MIT licensed.
+// The MIT license requires this copyright notice to be included in all copies
+// and substantial portions of the software.
 pub const Header = packed struct {
     magic: u16,
     version: u8,