diff --git a/disk-storage.go b/disk-storage.go
index 57dcb38..e6876ce 100644
--- a/disk-storage.go
+++ b/disk-storage.go
@@ -2,7 +2,6 @@ package main
 
 import (
 	"encoding/gob"
-	"errors"
 	"fmt"
 	"log"
 	"os"
@@ -55,11 +54,12 @@ func getCartPath(id string) string {
 func loadMessages(grain Grain, id CartId) error {
 	var err error
 	path := getCartPath(id.String())
-	if _, err = os.Stat(path); errors.Is(err, os.ErrNotExist) {
-		return nil
-	}
+
 	file, err := os.Open(path)
 	if err != nil {
+		if os.IsNotExist(err) {
+			return nil
+		}
 		return err
 	}
 	defer file.Close()