diff --git a/db/db.go b/db/db.go
index 1be722f..f3ff314 100644
--- a/db/db.go
+++ b/db/db.go
@@ -59,7 +59,7 @@ func (d *Db) Add(i Item) (int, bool) {
 func (d *Db) Transact(id int, persist bool, f func(*Item)) error {
 	d.mutex.Lock()
 	defer d.mutex.Unlock()
-	for i, _ := range d.items {
+	for i := range d.items {
 		if d.items[i].Id == id {
 			f(&d.items[i])
 			if persist {
@@ -68,7 +68,7 @@ func (d *Db) Transact(id int, persist bool, f func(*Item)) error {
 			return nil
 		}
 	}
-	return fmt.Errorf("Invalid id: %d", id)
+	return fmt.Errorf("invalid id: %d", id)
 }
 
 func (d *Db) save() error {
@@ -93,11 +93,13 @@ func (d *Db) Save() error {
 
 func Load(path string) (*Db, error) {
 	data, err := os.ReadFile(path)
+	indexMap := map[string]int{}
 	if err != nil {
 		if errors.Is(err, os.ErrNotExist) {
 			return &Db{
 				path:   path,
 				lastId: 0,
+				index:  indexMap,
 			}, nil
 		}
 		return nil, err
@@ -108,7 +110,6 @@ func Load(path string) (*Db, error) {
 		return nil, err
 	}
 	m := 0
-	indexMap := map[string]int{}
 	for _, item := range jd.Items {
 		if item.Id > m {
 			m = item.Id