diff --git a/routers/repo/issue.go b/routers/repo/issue.go
index 57852a5ad..635dee930 100644
--- a/routers/repo/issue.go
+++ b/routers/repo/issue.go
@@ -1079,7 +1079,7 @@ func NewMilestonePost(ctx *middleware.Context, form auth.CreateMilestoneForm) {
 	if len(form.Deadline) == 0 {
 		form.Deadline = "9999-12-31"
 	}
-	deadline, err := time.Parse("2006-01-02", form.Deadline)
+	deadline, err := time.ParseInLocation("2006-01-02", form.Deadline, time.Local)
 	if err != nil {
 		ctx.Data["Err_Deadline"] = true
 		ctx.RenderWithErr(ctx.Tr("repo.milestones.invalid_due_date_format"), MILESTONE_NEW, &form)
@@ -1139,7 +1139,7 @@ func EditMilestonePost(ctx *middleware.Context, form auth.CreateMilestoneForm) {
 	if len(form.Deadline) == 0 {
 		form.Deadline = "9999-12-31"
 	}
-	deadline, err := time.Parse("2006-01-02", form.Deadline)
+	deadline, err := time.ParseInLocation("2006-01-02", form.Deadline, time.Local)
 	if err != nil {
 		ctx.Data["Err_Deadline"] = true
 		ctx.RenderWithErr(ctx.Tr("repo.milestones.invalid_due_date_format"), MILESTONE_NEW, &form)