diff --git a/models/issue_milestone.go b/models/issue_milestone.go
index 761b598e9..a5e0bd60d 100644
--- a/models/issue_milestone.go
+++ b/models/issue_milestone.go
@@ -31,11 +31,6 @@ type Milestone struct {
 	ClosedDateUnix util.TimeStamp
 }
 
-// BeforeInsert is invoked from XORM before inserting an object of this type.
-func (m *Milestone) BeforeInsert() {
-	m.DeadlineUnix = util.TimeStampNow()
-}
-
 // BeforeUpdate is invoked from XORM before updating this object.
 func (m *Milestone) BeforeUpdate() {
 	if m.NumIssues > 0 {