diff --git a/anki.d b/anki.d
index b341390..fa162e2 100755
Binary files a/anki.d and b/anki.d differ
diff --git a/db.go b/db.go
index 3aaa7c6..1176f43 100644
--- a/db.go
+++ b/db.go
@@ -7,7 +7,7 @@ import (
 )
 
 type (
-	db struct {
+	yamlDB struct {
 		Knowledge knowledge
 		Users     map[string]user
 		Cadence   []duration
@@ -21,11 +21,11 @@ type (
 	}
 )
 
-func (db db) HistoryOf(user string) map[string][]History {
+func (db yamlDB) HistoryOf(user string) map[string][]History {
 	return db.Users[user].History
 }
 
-func (db db) Next(user, q string) time.Time {
+func (db yamlDB) Next(user, q string) time.Time {
 	history := db.Users[user].History[q]
 	progress := 0
 	for i := range history {
@@ -43,11 +43,11 @@ func (db db) Next(user, q string) time.Time {
 	return db.lastTS(user, q).Add(time.Duration(db.Cadence[progress]))
 }
 
-func (db db) Question(q string) Question {
+func (db yamlDB) Question(q string) Question {
 	return db.Knowledge.Questions[q]
 }
 
-func (db db) LastAnswer(user, q string) Answer {
+func (db yamlDB) LastAnswer(user, q string) Answer {
 	for _, v := range db.Knowledge.Answers {
 		if v.Q == q && v.Author == user {
 			return v
@@ -56,11 +56,11 @@ func (db db) LastAnswer(user, q string) Answer {
 	return Answer{}
 }
 
-func (db db) Answer(a string) Answer {
+func (db yamlDB) Answer(a string) Answer {
 	return db.Knowledge.Answers[a]
 }
 
-func (db db) PushAnswer(user, q, a string, pass bool) error {
+func (db yamlDB) PushAnswer(user, q, a string, pass bool) error {
 	uuid := uuid.New().String()
 	db.Knowledge.Answers[uuid] = Answer{
 		Q:      q,
@@ -75,7 +75,7 @@ func (db db) PushAnswer(user, q, a string, pass bool) error {
 	return nil
 }
 
-func (db db) lastTS(user, q string) time.Time {
+func (db yamlDB) lastTS(user, q string) time.Time {
 	max := int64(0)
 	for _, v := range db.Users[user].History[q] {
 		if v.TS > max {
diff --git a/main.go b/main.go
index 33633fb..73a64cf 100644
--- a/main.go
+++ b/main.go
@@ -80,7 +80,7 @@ func readline() string {
 }
 
 func NewDB() (DB, error) {
-	var db db
+	var db yamlDB
 	if b, err := os.ReadFile(os.Getenv("DB")); err != nil {
 		return nil, err
 	} else if err := yaml.Unmarshal(b, &db); err != nil {