diff --git a/pkg/controller/gc.go b/pkg/controller/gc.go
index 01d48511198..4e0caeb6f63 100644
--- a/pkg/controller/gc.go
+++ b/pkg/controller/gc.go
@@ -658,7 +658,7 @@ func (c *Controller) gcAddressSet() error {
 	}
 
 	if err = c.OVNNbClient.DeleteAddressSet(asList...); err != nil {
-		klog.Errorf("failed to delete address set %v,%v", asList, err)
+		klog.Errorf("failed to delete address set %v: %v", asList, err)
 		return err
 	}
 
diff --git a/pkg/daemon/handler.go b/pkg/daemon/handler.go
index 68b956ece9c..86c7d0d1458 100644
--- a/pkg/daemon/handler.go
+++ b/pkg/daemon/handler.go
@@ -456,7 +456,7 @@ func (csh cniServerHandler) handleDel(req *restful.Request, resp *restful.Respon
 	var vmName string
 
 	// If the Pod was found, process its annotations and labels.
-	if err == nil {
+	if pod != nil {
 		if pod.Annotations != nil && (util.IsOvnProvider(podRequest.Provider) || podRequest.CniType == util.CniTypeName) {
 			subnet := pod.Annotations[fmt.Sprintf(util.LogicalSwitchAnnotationTemplate, podRequest.Provider)]
 			if subnet != "" {
diff --git a/pkg/util/validator.go b/pkg/util/validator.go
index 942eb750ffe..fd4577ca766 100644
--- a/pkg/util/validator.go
+++ b/pkg/util/validator.go
@@ -356,7 +356,7 @@ func ValidateNetworkBroadcast(cidr, ip string) error {
 			}
 			_, network, _ := net.ParseCIDR(cidrBlock)
 			if AddressCount(network) == 1 {
-				return fmt.Errorf("subnet %s is configured with /32 netmask", cidrBlock)
+				return fmt.Errorf("subnet %s is configured with /32 or /128 netmask", cidrBlock)
 			}
 
 			ipStr := IPToString(ipAddr)
diff --git a/pkg/util/validator_test.go b/pkg/util/validator_test.go
index 956918060c6..e5625e76628 100644
--- a/pkg/util/validator_test.go
+++ b/pkg/util/validator_test.go
@@ -841,7 +841,7 @@ func TestValidateSubnet(t *testing.T) {
 				},
 				Status: kubeovnv1.SubnetStatus{},
 			},
-			err: "validate gateway 10.16.0.0 for cidr 10.16.0.0/32 failed: subnet 10.16.0.0/32 is configured with /32 netmask",
+			err: "validate gateway 10.16.0.0 for cidr 10.16.0.0/32 failed: subnet 10.16.0.0/32 is configured with /32 or /128 netmask",
 		},
 	}