diff --git a/format/formatter.go b/format/formatter.go
index 4efa198..99dba2a 100644
--- a/format/formatter.go
+++ b/format/formatter.go
@@ -1,3 +1,8 @@
+// Copyright © 2015 Daniele Tricoli <eriol@mornie.org>.
+// All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
 package format // import "eriol.xyz/piken/format"
 
 import "eriol.xyz/piken/sql"
diff --git a/format/formatter_test.go b/format/formatter_test.go
index 62e805c..03238c2 100644
--- a/format/formatter_test.go
+++ b/format/formatter_test.go
@@ -1,4 +1,10 @@
+// Copyright © 2015 Daniele Tricoli <eriol@mornie.org>.
+// All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
 package format // import "eriol.xyz/piken/format"
+
 import (
 	"testing"
 
diff --git a/format/text.go b/format/text.go
index 43416a4..b928ee1 100644
--- a/format/text.go
+++ b/format/text.go
@@ -1,3 +1,8 @@
+// Copyright © 2015 Daniele Tricoli <eriol@mornie.org>.
+// All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
 package format // import "eriol.xyz/piken/format"
 
 import (
diff --git a/format/text_test.go b/format/text_test.go
index 07a9b47..953f372 100644
--- a/format/text_test.go
+++ b/format/text_test.go
@@ -1,3 +1,8 @@
+// Copyright © 2015 Daniele Tricoli <eriol@mornie.org>.
+// All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
 package format // import "eriol.xyz/piken/format"
 
 import (
diff --git a/main.go b/main.go
index 2e9853f..3c79422 100644
--- a/main.go
+++ b/main.go
@@ -1,3 +1,8 @@
+// Copyright © 2015 Daniele Tricoli <eriol@mornie.org>.
+// All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
 package main // import "eriol.xyz/piken"
 
 import (
diff --git a/sql/sql.go b/sql/sql.go
index 89507a7..75b8c0c 100644
--- a/sql/sql.go
+++ b/sql/sql.go
@@ -1,3 +1,8 @@
+// Copyright © 2015 Daniele Tricoli <eriol@mornie.org>.
+// All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
 package sql // import "eriol.xyz/piken/sql"
 
 import (
diff --git a/sql/sql_test.go b/sql/sql_test.go
index 104fa98..516f6b1 100644
--- a/sql/sql_test.go
+++ b/sql/sql_test.go
@@ -1,4 +1,9 @@
-package sql
+// Copyright © 2015 Daniele Tricoli <eriol@mornie.org>.
+// All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package sql // import "eriol.xyz/piken/sql"
 
 import (
 	"io/ioutil"
diff --git a/utils.go b/utils.go
index 0a2710d..9f0113f 100644
--- a/utils.go
+++ b/utils.go
@@ -1,3 +1,8 @@
+// Copyright © 2015 Daniele Tricoli <eriol@mornie.org>.
+// All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
 package main // import "eriol.xyz/piken"
 
 import (