diff --git a/cmd/mount/mount_test.go b/cmd/mount/mount_test.go
index faa9a1599..cdc806b28 100644
--- a/cmd/mount/mount_test.go
+++ b/cmd/mount/mount_test.go
@@ -1,3 +1,5 @@
+// +build linux darwin freebsd
+
 package mount
 
 import (