diff --git a/models/queue_log.go b/models/queue_log.go
index 65d0b2d..4e824be 100644
--- a/models/queue_log.go
+++ b/models/queue_log.go
@@ -7,7 +7,8 @@ type DBQueueLog struct {
 	ConversationId string    `gorm:"primaryKey"`
 	Start          time.Time `gorm:"index"`
 	End            time.Time `gorm:"index"`
-	Result         string    `gorm:"type:json"`
+	Duration       float64
+	Result         string `gorm:"type:json"`
 }
 
 func (DBQueueLog) TableName() string {