diff --git a/test/interface/assertinline.go b/test/interface/assertinline.go
index faa848a..227fe70 100644
--- a/test/interface/assertinline.go
+++ b/test/interface/assertinline.go
@@ -1,6 +1,6 @@
 // errorcheck -0 -d=typeassert
 
-// Copyright 2015 The Go Authors.  All rights reserved.
+// Copyright 2015 The Go Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.