diff --git a/collector/filesystem_common.go b/collector/filesystem_common.go
index 1adf1ba7..ce98ed1e 100644
--- a/collector/filesystem_common.go
+++ b/collector/filesystem_common.go
@@ -1,4 +1,5 @@
 // +build !nofilesystem
+// +build linux freebsd
 
 package collector