diff --git a/cmd/s3-benchmark/main.go b/cmd/s3-benchmark/main.go
index 25584114d..6402892f6 100644
--- a/cmd/s3-benchmark/main.go
+++ b/cmd/s3-benchmark/main.go
@@ -1,3 +1,6 @@
+// Copyright (C) 2018 Storj Labs, Inc.
+// See LICENSE for copying information.
+
 package main
 
 import (
diff --git a/cmd/s3-benchmark/size.go b/cmd/s3-benchmark/size.go
index db1e1ee57..ec880dd2b 100644
--- a/cmd/s3-benchmark/size.go
+++ b/cmd/s3-benchmark/size.go
@@ -1,3 +1,6 @@
+// Copyright (C) 2018 Storj Labs, Inc.
+// See LICENSE for copying information.
+
 package main
 
 import (