diff --git a/pkg/controller/backup_queue_controller.go b/pkg/controller/backup_queue_controller.go
index 5a99c6328..87da3cb12 100644
--- a/pkg/controller/backup_queue_controller.go
+++ b/pkg/controller/backup_queue_controller.go
@@ -25,6 +25,7 @@ import (
 	"github.com/sirupsen/logrus"
 	corev1api "k8s.io/api/core/v1"
 	"k8s.io/apimachinery/pkg/runtime"
+        "k8s.io/apimachinery/pkg/util/sets"
 	"k8s.io/apimachinery/pkg/types"
 	"k8s.io/apimachinery/pkg/util/sets"
 	ctrl "sigs.k8s.io/controller-runtime"