diff --git a/src/pkg/archive/tar/stat_atim.go b/src/pkg/archive/tar/stat_atim.go
index 72342ef37a..cf9cc79c59 100644
--- a/src/pkg/archive/tar/stat_atim.go
+++ b/src/pkg/archive/tar/stat_atim.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 linux openbsd solaris
+// +build linux dragonfly openbsd solaris
 
 package tar
 
diff --git a/src/pkg/archive/tar/stat_unix.go b/src/pkg/archive/tar/stat_unix.go
index e5ba673ccf..cb843db4cf 100644
--- a/src/pkg/archive/tar/stat_unix.go
+++ b/src/pkg/archive/tar/stat_unix.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 linux darwin freebsd openbsd netbsd solaris
+// +build linux darwin dragonfly freebsd openbsd netbsd solaris
 
 package tar