diff --git a/backend/cmd/migration/1_2.go b/backend/cmd/migration/1_2.go
index b14606c..8bf9d7a 100644
--- a/backend/cmd/migration/1_2.go
+++ b/backend/cmd/migration/1_2.go
@@ -247,7 +247,7 @@ func migrateTls(db *gorm.DB) error {
 		if err != nil {
 			continue
 		}
-		for key, _ := range tlsClient {
+		for key := range tlsClient {
 			switch key {
 			case "insecure", "disable_sni", "utls", "ech", "reality":
 				continue
@@ -291,6 +291,10 @@ func migrateClients(db *gorm.DB) error {
 	return db.Save(oldClients).Error
 }
 
+func migrateChanges(db *gorm.DB) error {
+	return db.Migrator().DropColumn(&model.Changes{}, "index")
+}
+
 func to1_2(db *gorm.DB) error {
 	err := moveJsonToDb(db)
 	if err != nil {
@@ -304,5 +308,9 @@ func to1_2(db *gorm.DB) error {
 	if err != nil {
 		return err
 	}
-	return migrateClients(db)
+	err = migrateClients(db)
+	if err != nil {
+		return err
+	}
+	return migrateChanges(db)
 }
diff --git a/backend/database/model/model.go b/backend/database/model/model.go
index 83b2941..b620707 100644
--- a/backend/database/model/model.go
+++ b/backend/database/model/model.go
@@ -49,9 +49,8 @@ type Stats struct {
 type Changes struct {
 	Id       uint64          `json:"id" gorm:"primaryKey;autoIncrement"`
 	DateTime int64           `json:"dateTime"`
-	Actor    string          `json:"Actor"`
-	Key      string          `json:"key" form:"key"`
-	Action   string          `json:"action" form:"action"`
-	Index    uint            `json:"index" form:"index"`
-	Obj      json.RawMessage `json:"obj" form:"obj"`
+	Actor    string          `json:"actor"`
+	Key      string          `json:"key"`
+	Action   string          `json:"action"`
+	Obj      json.RawMessage `json:"obj"`
 }