diff --git a/src/util/ConstBuffer.hxx b/src/util/ConstBuffer.hxx
index 949420871..f0fa0fa6a 100644
--- a/src/util/ConstBuffer.hxx
+++ b/src/util/ConstBuffer.hxx
@@ -1,5 +1,5 @@
 /*
- * Copyright 2013-2020 Max Kellermann <max.kellermann@gmail.com>
+ * Copyright 2013-2021 Max Kellermann <max.kellermann@gmail.com>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -30,8 +30,6 @@
 #ifndef CONST_BUFFER_HXX
 #define CONST_BUFFER_HXX
 
-#include "Compiler.h"
-
 #include <cassert>
 #include <cstddef>
 
diff --git a/src/util/HugeAllocator.cxx b/src/util/HugeAllocator.cxx
index df6f106b1..000595be6 100644
--- a/src/util/HugeAllocator.cxx
+++ b/src/util/HugeAllocator.cxx
@@ -1,5 +1,5 @@
 /*
- * Copyright 2013-2019 Max Kellermann <max.kellermann@gmail.com>
+ * Copyright 2013-2021 Max Kellermann <max.kellermann@gmail.com>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -28,6 +28,7 @@
  */
 
 #include "HugeAllocator.hxx"
+#include "Compiler.h"
 
 #include <new>
 
diff --git a/src/util/WritableBuffer.hxx b/src/util/WritableBuffer.hxx
index 0b82c9146..91414c0e5 100644
--- a/src/util/WritableBuffer.hxx
+++ b/src/util/WritableBuffer.hxx
@@ -1,5 +1,5 @@
 /*
- * Copyright 2013-2020 Max Kellermann <max.kellermann@gmail.com>
+ * Copyright 2013-2021 Max Kellermann <max.kellermann@gmail.com>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -31,7 +31,6 @@
 #define WRITABLE_BUFFER_HXX
 
 #include "ConstBuffer.hxx"
-#include "Compiler.h"
 
 #include <cassert>
 #include <cstddef>