diff --git a/registry/polaris/core.go b/registry/polaris/core.go
index 9d777126f9..d505d1495c 100644
--- a/registry/polaris/core.go
+++ b/registry/polaris/core.go
@@ -20,13 +20,18 @@ package polaris
 import (
 	"sync"
 	"time"
+)
 
-	"dubbo.apache.org/dubbo-go/v3/config_center"
-	"dubbo.apache.org/dubbo-go/v3/remoting"
+import (
 	"github.com/polarismesh/polaris-go/api"
 	"github.com/polarismesh/polaris-go/pkg/model"
 )
 
+import (
+	"dubbo.apache.org/dubbo-go/v3/config_center"
+	"dubbo.apache.org/dubbo-go/v3/remoting"
+)
+
 type subscriber func(remoting.EventType, []model.Instance)
 
 // PolarisServiceWatcher