diff --git a/pkg/controller/node.go b/pkg/controller/node.go
index ab60bb0abc8..9f21fff0ca8 100644
--- a/pkg/controller/node.go
+++ b/pkg/controller/node.go
@@ -536,7 +536,7 @@ func (c *Controller) updateProviderNetworkForNodeDeletion(pn *kubeovnv1.Provider
 	// update provider network spec
 	pn, newPn = newPn, nil
 	if excludeNodes := util.RemoveString(pn.Spec.ExcludeNodes, node); len(excludeNodes) != len(pn.Spec.ExcludeNodes) {
-		newPn := pn.DeepCopy()
+		newPn = pn.DeepCopy()
 		newPn.Spec.ExcludeNodes = excludeNodes
 	}