diff --git a/pkg/scheduler/util/utils.go b/pkg/scheduler/util/utils.go
index eb7c4301f30..967c248355d 100644
--- a/pkg/scheduler/util/utils.go
+++ b/pkg/scheduler/util/utils.go
@@ -31,6 +31,7 @@ import (
 	"k8s.io/apimachinery/pkg/util/net"
 	"k8s.io/apimachinery/pkg/util/strategicpatch"
 	"k8s.io/client-go/kubernetes"
+	"k8s.io/client-go/tools/cache"
 	"k8s.io/client-go/util/retry"
 	corev1helpers "k8s.io/component-helpers/scheduling/corev1"
 	"k8s.io/klog/v2"
@@ -164,6 +165,8 @@ func IsScalarResourceName(name v1.ResourceName) bool {
 // As converts two objects to the given type.
 // Both objects must be of the same type. If not, an error is returned.
 // nil objects are allowed and will be converted to nil.
+// For oldObj, cache.DeletedFinalStateUnknown is handled and the
+// object stored in it will be converted instead.
 func As[T runtime.Object](oldObj, newobj interface{}) (T, T, error) {
 	var oldTyped T
 	var newTyped T
@@ -176,6 +179,9 @@ func As[T runtime.Object](oldObj, newobj interface{}) (T, T, error) {
 	}
 
 	if oldObj != nil {
+		if realOldObj, ok := oldObj.(cache.DeletedFinalStateUnknown); ok {
+			oldObj = realOldObj.Obj
+		}
 		oldTyped, ok = oldObj.(T)
 		if !ok {
 			return oldTyped, newTyped, fmt.Errorf("expected %T, but got %T", oldTyped, oldObj)