diff --git a/src/ThreadPool.zig b/src/ThreadPool.zig
index 813d67db66..ac95def319 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 d621bfcb18..e4126b1ab3 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 96de020b0c..6351f67214 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;