diff --git a/_content/tour/solutions/rot13.go b/_content/tour/solutions/rot13.go
index 84315a4..8edce64 100644
--- a/_content/tour/solutions/rot13.go
+++ b/_content/tour/solutions/rot13.go
@@ -1,9 +1,9 @@
+// +build OMIT ignore
+
 // Copyright 2012 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.
 
-// +build ignore
-
 package main
 
 import (