diff --git a/pkg/naming/etcd/etcd_test.go b/pkg/naming/etcd/etcd_test.go
index 28366cc0c..7d8e8f7e4 100644
--- a/pkg/naming/etcd/etcd_test.go
+++ b/pkg/naming/etcd/etcd_test.go
@@ -68,7 +68,7 @@ func TestNew(t *testing.T) {
 					}
 				}
 			}else{
-				fmt.Println("\n")
+				fmt.Printf("\n")
 			}
 			fmt.Printf("app2: ")
 			r2, _ := app2.Fetch(context.Background())