diff --git a/carddav/backend.go b/carddav/backend.go
index 516088a..345c7e9 100644
--- a/carddav/backend.go
+++ b/carddav/backend.go
@@ -4,6 +4,7 @@ package carddav
 
 import (
 	"errors"
+	"os"
 
 	"github.com/emersion/go-vcard"
 )
@@ -15,6 +16,7 @@ var (
 type AddressObject interface {
 	ID() string
 	Card() (vcard.Card, error)
+	Stat() (os.FileInfo, error) // can return nil, nil
 }
 
 type AddressBook interface {
diff --git a/carddav/carddav.go b/carddav/carddav.go
index 3cc4870..fdb1fe3 100644
--- a/carddav/carddav.go
+++ b/carddav/carddav.go
@@ -117,6 +117,11 @@ func (f *file) Readdir(count int) ([]os.FileInfo, error) {
 }
 
 func (f *file) Stat() (os.FileInfo, error) {
+	info, err := f.ao.Stat()
+	if info != nil || err != nil {
+		return info, err
+	}
+
 	return &fileInfo{
 		name: f.name,
 		mode: os.ModePerm,
@@ -158,10 +163,18 @@ func (d *dir) Readdir(count int) ([]os.FileInfo, error) {
 
 		d.files = make([]os.FileInfo, len(aos))
 		for i, ao := range aos {
-			d.files[i] = &fileInfo{
+			f := &file{
+				fs: d.fs,
 				name: ao.ID() + ".vcf",
-				mode: os.ModePerm,
+				ao: ao,
 			}
+
+			info, err := f.Stat()
+			if err != nil {
+				return nil, err
+			}
+
+			d.files[i] = info
 		}
 	}