diff --git a/pkg/models/project_duplicate.go b/pkg/models/project_duplicate.go
index 4d5ba95cf..dba12ebb5 100644
--- a/pkg/models/project_duplicate.go
+++ b/pkg/models/project_duplicate.go
@@ -81,6 +81,7 @@ func (pd *ProjectDuplicate) Create(s *xorm.Session, doer web.Auth) (err error) {
 	pd.Project.ParentProjectID = pd.ParentProjectID
 	// Set the owner to the current user
 	pd.Project.OwnerID = doer.GetID()
+	pd.Project.Title += " - duplicate"
 	err = CreateProject(s, pd.Project, doer, false, false)
 	if err != nil {
 		// If there is no available unique project identifier, just reset it.