diff --git a/pkg/scheduler/framework/interface.go b/pkg/scheduler/framework/interface.go
index 9c587aa3aed..00a14ad1a39 100644
--- a/pkg/scheduler/framework/interface.go
+++ b/pkg/scheduler/framework/interface.go
@@ -641,11 +641,11 @@ func (p *PreFilterResult) Merge(in *PreFilterResult) *PreFilterResult {
 
 	r := PreFilterResult{}
 	if p.AllNodes() {
-		r.NodeNames = sets.NewString(in.NodeNames.UnsortedList()...)
+		r.NodeNames = in.NodeNames.Clone()
 		return &r
 	}
 	if in.AllNodes() {
-		r.NodeNames = sets.NewString(p.NodeNames.UnsortedList()...)
+		r.NodeNames = p.NodeNames.Clone()
 		return &r
 	}