diff --git a/models/dataset.go b/models/dataset.go
index 0e93da628..2b54e539e 100644
--- a/models/dataset.go
+++ b/models/dataset.go
@@ -291,30 +291,11 @@ func GetOwnerDatasetByID(id int64, user *User) (*Dataset, error) {
 	return nil, errors.New("dataset not fount")
 }
 
-func IncreaseDownloadCount(datasetID int64, uid int64) error {
-	var err error
-	sess := x.NewSession()
-	defer sess.Close()
-	if err = sess.Begin(); err != nil {
-		return err
-	}
-
-	dataset := &Dataset{ID: datasetID, UserID: uid}
-	has, err := sess.Get(dataset)
-	if err != nil {
-		return err
-	} else if !has {
-		return errors.New("not found")
-	}
-
+func IncreaseDownloadCount(datasetID int64) error {
 	// Update download count.
-	if _, err := sess.Exec("UPDATE `dataset` SET download_times=download_times+1 WHERE id=?", datasetID); err != nil {
+	if _, err := x.Exec("UPDATE `dataset` SET download_times=download_times+1 WHERE id=?", datasetID); err != nil {
 		return fmt.Errorf("increase dataset count: %v", err)
 	}
 
-	if err = sess.Commit(); err != nil {
-		sess.Close()
-		return fmt.Errorf("Commit: %v", err)
-	}
 	return nil
 }
diff --git a/routers/repo/attachment.go b/routers/repo/attachment.go
index e5940a5a9..05b94ca22 100644
--- a/routers/repo/attachment.go
+++ b/routers/repo/attachment.go
@@ -186,7 +186,7 @@ func increaseDownloadCount(attach *models.Attachment, dataSet *models.Dataset) e
 	}
 
 	if dataSet != nil {
-		if err := models.IncreaseDownloadCount(dataSet.ID, dataSet.UserID); err != nil {
+		if err := models.IncreaseDownloadCount(dataSet.ID); err != nil {
 			return err
 		}
 	}