diff --git a/fit/run.go b/fit/run.go
index eded6edb7..a92187562 100644
--- a/fit/run.go
+++ b/fit/run.go
@@ -1,3 +1,7 @@
+// Copyright ©2021 The go-hep Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
 //go:build ignore
 // +build ignore
 
diff --git a/groot/riofs/gendata/gen-dir.go b/groot/riofs/gendata/gen-dir.go
index 9b86c92ac..024a0fddf 100644
--- a/groot/riofs/gendata/gen-dir.go
+++ b/groot/riofs/gendata/gen-dir.go
@@ -1,10 +1,10 @@
-//go:build ignore
-// +build ignore
-
 // Copyright ©2018 The go-hep Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build ignore
+// +build ignore
+
 package main
 
 import (
diff --git a/groot/riofs/gendata/gen-evnt-tree.go b/groot/riofs/gendata/gen-evnt-tree.go
index fef7e658a..43f3e06e8 100644
--- a/groot/riofs/gendata/gen-evnt-tree.go
+++ b/groot/riofs/gendata/gen-evnt-tree.go
@@ -1,10 +1,10 @@
-//go:build ignore
-// +build ignore
-
 // Copyright ©2018 The go-hep Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build ignore
+// +build ignore
+
 package main
 
 import (
diff --git a/groot/riofs/gendata/gen-small-evnt-tree.go b/groot/riofs/gendata/gen-small-evnt-tree.go
index 2e839c841..a38e8192e 100644
--- a/groot/riofs/gendata/gen-small-evnt-tree.go
+++ b/groot/riofs/gendata/gen-small-evnt-tree.go
@@ -1,10 +1,10 @@
-//go:build ignore
-// +build ignore
-
 // Copyright ©2018 The go-hep Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build ignore
+// +build ignore
+
 package main
 
 import (