diff --git a/models/project/issue.go b/models/project/issue.go
index 0976185c495..6bde91668fa 100644
--- a/models/project/issue.go
+++ b/models/project/issue.go
@@ -19,6 +19,9 @@ type ProjectIssue struct { //revive:disable-line:exported
 
 	// If 0, then it has not been added to a specific board in the project
 	ProjectBoardID int64 `xorm:"INDEX"`
+
+	// the sorting order on the board
+	Sorting int64 `xorm:"NOT NULL DEFAULT 0"`
 }
 
 func init() {