diff --git a/pkg/models/task_search.go b/pkg/models/task_search.go
index 0425cbf5e..190fd150d 100644
--- a/pkg/models/task_search.go
+++ b/pkg/models/task_search.go
@@ -261,8 +261,13 @@ func (d *dbTaskSearcher) Search(opts *taskSearchOptions) (tasks []*Task, totalCo
 	limit, start := getLimitFromPageIndex(opts.page, opts.perPage)
 	cond := builder.And(builder.Or(projectIDCond, favoritesCond), where, filterCond)
 
+	var distinct = "tasks.*"
+	if strings.Contains(orderby, "task_positions.") {
+		distinct += ", task_positions.position"
+	}
+
 	query := d.s.
-		Distinct("tasks.*").
+		Distinct(distinct).
 		Where(cond)
 	if limit > 0 {
 		query = query.Limit(limit, start)