diff --git a/LICENSE b/LICENSE
index 00d1776..4fb4674 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,4 +1,4 @@
-Copyright © 2016, Ventu.io, Oleg Sklyar, contributors
+Copyright (c) 2016, Ventu.io, Oleg Sklyar, contributors
 
 Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
 associated documentation files (the "Software"), to deal in the Software without restriction,
diff --git a/README.md b/README.md
index 3a938f9..690e863 100644
--- a/README.md
+++ b/README.md
@@ -102,15 +102,15 @@ implement an algorithm with e.g. more randomness, but with longer Ids and shorte
 
 ## License
 
-Copyright © 2016 Ventu.io, Oleg Sklyar, contributors.
+Copyright (c) 2016 Ventu.io, Oleg Sklyar, contributors.
 
 Distributed under a MIT style license found in the [LICENSE][license] file.
 
-**[Original algorithm][nodeshortid]:** Copyright © 2015 Dylan Greene, contributors. The same MIT
+**[Original algorithm][nodeshortid]:** Copyright (c) 2015 Dylan Greene, contributors. The same MIT
 license applies. Many thanks to Dylan for putting together the original node.js library, which
 inspired this "port":
 
-**Seed computation:** based on The Central Randomizer 1.3. Copyright © 1997 Paul Houle (houle@msc.cornell.edu)
+**Seed computation:** based on The Central Randomizer 1.3. Copyright (c) 1997 Paul Houle (houle@msc.cornell.edu)
 
 
 [go]: https://golang.org
diff --git a/shortid.go b/shortid.go
index 76d839b..3e2f974 100644
--- a/shortid.go
+++ b/shortid.go
@@ -1,12 +1,12 @@
-// Copyright © 2016 Ventu.io, Oleg Sklyar, contributors
+// Copyright (c) 2016 Ventu.io, Oleg Sklyar, contributors
 // The use of this source code is governed by a MIT style license found in the LICENSE file
 
 // Original algorithm:
-// Copyright © 2015 Dylan Greene, contributors: https://github.com/dylang/shortid.
+// Copyright (c) 2015 Dylan Greene, contributors: https://github.com/dylang/shortid.
 // MIT-license as found in the LICENSE file.
 
 // Seed computation: based on The Central Randomizer 1.3
-// Copyright © 1997 Paul Houle (houle@msc.cornell.edu)
+// Copyright (c) 1997 Paul Houle (houle@msc.cornell.edu)
 
 // Package shortid enables the generation of short, unique, non-sequential and by default URL friendly
 // Ids. The package is heavily inspired by the node.js https://github.com/dylang/shortid library.
diff --git a/shortid_integration_test.go b/shortid_integration_test.go
index 14c0630..9262e94 100644
--- a/shortid_integration_test.go
+++ b/shortid_integration_test.go
@@ -1,4 +1,4 @@
-// Copyright © 2016 Ventu.io, Oleg Sklyar, contributors
+// Copyright (c) 2016 Ventu.io, Oleg Sklyar, contributors
 // The use of this source code is governed by a MIT style license found in the LICENSE file
 
 package shortid_test
diff --git a/shortid_test.go b/shortid_test.go
index be49ae4..4c65663 100644
--- a/shortid_test.go
+++ b/shortid_test.go
@@ -1,4 +1,4 @@
-// Copyright © 2016 Ventu.io, Oleg Sklyar, contributors
+// Copyright (c) 2016 Ventu.io, Oleg Sklyar, contributors
 // The use of this source code is governed by a MIT style license found in the LICENSE file
 
 package shortid_test
@@ -136,9 +136,6 @@ func TestShortid_onMustGenerate_success(t *testing.T) {
 	if id := sid.MustGenerate(); len(id) != 9 {
 		t.Errorf("expected id of length 9, found %v", id)
 	}
-	if id := sid.MustGenerate(); len(id) != 10 {
-		t.Errorf("expected id of length 10, found %v", id)
-	}
 	time.Sleep(2 * time.Millisecond)
 	if id := sid.MustGenerate(); len(id) != 9 {
 		t.Errorf("expected id of length 9, found %v", id)