diff --git a/src/util/Exception.cxx b/src/util/Exception.cxx
index 04dfcf1f1..445662096 100644
--- a/src/util/Exception.cxx
+++ b/src/util/Exception.cxx
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2016-2017 Max Kellermann <max.kellermann@gmail.com>
+ * Copyright 2016-2018 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
diff --git a/src/util/Exception.hxx b/src/util/Exception.hxx
index bbe7f2d4a..067f4923d 100644
--- a/src/util/Exception.hxx
+++ b/src/util/Exception.hxx
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2016-2017 Max Kellermann <max.kellermann@gmail.com>
+ * Copyright 2016-2018 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
diff --git a/src/util/StringBuffer.hxx b/src/util/StringBuffer.hxx
index 4fbcde234..a4dc4189a 100644
--- a/src/util/StringBuffer.hxx
+++ b/src/util/StringBuffer.hxx
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2010-2018 Max Kellermann <max.kellermann@gmail.com>
+ * Copyright 2010-2018 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