diff --git a/lib/ftime_unix.go b/lib/ftime_unix.go
index 2f6a3f5..c5f9a3c 100644
--- a/lib/ftime_unix.go
+++ b/lib/ftime_unix.go
@@ -1,4 +1,4 @@
-// +build unix linux openbsd
+// +build unix linux openbsd darwin,amd64
 
 package lib