diff --git a/unix/dirent.go b/unix/dirent.go
index 6f3460e6..304016b6 100644
--- a/unix/dirent.go
+++ b/unix/dirent.go
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build aix darwin dragonfly freebsd linux nacl netbsd openbsd solaris
+// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris
 
 package unix