diff --git a/models/issue_milestone.go b/models/issue_milestone.go
index 7f2fd9a1f3b60..a3217185134e4 100644
--- a/models/issue_milestone.go
+++ b/models/issue_milestone.go
@@ -134,22 +134,6 @@ func GetMilestoneByRepoIDANDName(repoID int64, name string) (*Milestone, error)
 	return &mile, nil
 }
 
-// GetMilestoneByID returns the milestone via id .
-func GetMilestoneByID(id int64) (*Milestone, error) {
-	return getMilestoneByID(db.GetEngine(db.DefaultContext), id)
-}
-
-func getMilestoneByID(e db.Engine, id int64) (*Milestone, error) {
-	var m Milestone
-	has, err := e.ID(id).Get(&m)
-	if err != nil {
-		return nil, err
-	} else if !has {
-		return nil, ErrMilestoneNotExist{ID: id, RepoID: 0}
-	}
-	return &m, nil
-}
-
 // UpdateMilestone updates information of given milestone.
 func UpdateMilestone(m *Milestone, oldIsClosed bool) error {
 	ctx, committer, err := db.TxContext()
diff --git a/routers/web/repo/issue.go b/routers/web/repo/issue.go
index 9dee477537d87..8c707e1678962 100644
--- a/routers/web/repo/issue.go
+++ b/routers/web/repo/issue.go
@@ -802,7 +802,7 @@ func NewIssue(ctx *context.Context) {
 
 	milestoneID := ctx.FormInt64("milestone")
 	if milestoneID > 0 {
-		milestone, err := models.GetMilestoneByID(milestoneID)
+		milestone, err := models.GetMilestoneByRepoID(ctx.Repo.Repository.ID, milestoneID)
 		if err != nil {
 			log.Error("GetMilestoneByID: %d: %v", milestoneID, err)
 		} else {
@@ -889,7 +889,7 @@ func ValidateRepoMetas(ctx *context.Context, form forms.CreateIssueForm, isPull
 	// Check milestone.
 	milestoneID := form.MilestoneID
 	if milestoneID > 0 {
-		milestone, err := models.GetMilestoneByID(milestoneID)
+		milestone, err := models.GetMilestoneByRepoID(ctx.Repo.Repository.ID, milestoneID)
 		if err != nil {
 			ctx.ServerError("GetMilestoneByID", err)
 			return nil, nil, 0, 0
diff --git a/routers/web/repo/milestone.go b/routers/web/repo/milestone.go
index eadc89333f90b..df5fd411b4b72 100644
--- a/routers/web/repo/milestone.go
+++ b/routers/web/repo/milestone.go
@@ -264,7 +264,7 @@ func DeleteMilestone(ctx *context.Context) {
 // MilestoneIssuesAndPulls lists all the issues and pull requests of the milestone
 func MilestoneIssuesAndPulls(ctx *context.Context) {
 	milestoneID := ctx.ParamsInt64(":id")
-	milestone, err := models.GetMilestoneByID(milestoneID)
+	milestone, err := models.GetMilestoneByRepoID(ctx.Repo.Repository.ID, milestoneID)
 	if err != nil {
 		if models.IsErrMilestoneNotExist(err) {
 			ctx.NotFound("GetMilestoneByID", err)