diff --git a/src/restic/fs/file_linux.go b/src/restic/fs/file_linux.go
index baff4bd9..90152ee6 100644
--- a/src/restic/fs/file_linux.go
+++ b/src/restic/fs/file_linux.go
@@ -1,3 +1,5 @@
+// +build linux,go1.4
+
 package fs
 
 import (