diff --git a/models/star.go b/models/star.go
index bb3c4329b..4bc50d82b 100644
--- a/models/star.go
+++ b/models/star.go
@@ -4,12 +4,14 @@
 
 package models
 
+import "code.gitea.io/gitea/modules/timeutil"
+
 // Star represents a starred repo by an user.
 type Star struct {
-	ID          int64 `xorm:"pk autoincr"`
-	UID         int64 `xorm:"UNIQUE(s)"`
-	RepoID      int64 `xorm:"UNIQUE(s)"`
-	CreatedUnix int64 `xorm:"created"`
+	ID          int64              `xorm:"pk autoincr"`
+	UID         int64              `xorm:"UNIQUE(s)"`
+	RepoID      int64              `xorm:"UNIQUE(s)"`
+	CreatedUnix timeutil.TimeStamp `xorm:"created"`
 }
 
 // StarRepo or unstar repository.
@@ -40,7 +42,7 @@ func StarRepo(userID, repoID int64, star bool) error {
 			return nil
 		}
 
-		if _, err := sess.Delete(&Star{0, userID, repoID}); err != nil {
+		if _, err := sess.Delete(&Star{0, userID, repoID, 0}); err != nil {
 			return err
 		}
 		if _, err := sess.Exec("UPDATE `repository` SET num_stars = num_stars - 1 WHERE id = ?", repoID); err != nil {