diff --git a/src/ThreadPool.zig b/src/ThreadPool.zig
index 813d67db660d462492719c01031de01a54607fe3..ac95def319e19c8d6aeafd7644bca23fffe0ed00 100644
--- a/src/ThreadPool.zig
+++ b/src/ThreadPool.zig
@@ -1,8 +1,3 @@
-// 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 std = @import("std");
 const builtin = @import("builtin");
 const ThreadPool = @This();
diff --git a/src/WaitGroup.zig b/src/WaitGroup.zig
index d621bfcb187ebbbd4583a53babb2662790cdefd5..e4126b1ab36253225db46a5c06af4e59c41f3e2b 100644
--- a/src/WaitGroup.zig
+++ b/src/WaitGroup.zig
@@ -1,8 +1,3 @@
-// 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 std = @import("std");
 const WaitGroup = @This();
 
diff --git a/src/translate_c/ast.zig b/src/translate_c/ast.zig
index 96de020b0c65a3110edd502f4a3f7ea9491ae113..6351f67214927850f73043f260f1d22906331168 100644
--- a/src/translate_c/ast.zig
+++ b/src/translate_c/ast.zig
@@ -1,8 +1,3 @@
-// SPDX-License-Identifier: MIT
-// Copyright (c) 2021 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 std = @import("std");
 const Type = @import("../type.zig").Type;
 const Allocator = std.mem.Allocator;